Plan
Comptes Rendus

Synthesis of new chiral N-arylsulfonyl-1,3-oxazolidin-2-ones from α-amino acids
Comptes Rendus. Chimie, Volume 10 (2007) no. 3, pp. 251-258.

Résumés

A variety of new chiral N-arylsulfonyl-1,3-oxazolidin-2-ones were prepared in three steps starting from (d)- and (l)-amino acid. N-Arylsulfonyl amino alcohols, derived from amino acids, were carbonylated with the bis-(trichloromethyl) carbonate (BTC), in the presence of triethylamine, to provide optically pure N-phenylsulfonyloxazolidin-2-ones 3af, N-naphthylsulfonyloxazolidin-2-ones 3gj and N-tosylsulfonyloxazolidin-2-ones 3kp in good yields.

Re´sume´

Une variété de nouvelles N-arylsulfonyloxazolidin-2-ones chirales a été préparée en trois étapes à partir d'acides α-aminés (d) et (l). Les N-arylsulfonyl aminoalcools, dérivés des acides aminés, ont été carbonylés par l'intermédiaire du carbonate de bis-trichlorométhyle, avec de bons rendements chimiques.

Métadonnées
Reçu le :
Accepté le :
Publié le :
DOI : 10.1016/j.crci.2006.10.004
Mots clés : Amino acids, Bis-(trichloromethyl)carbonate, N-Arylsulfonyloxazolidin-2-ones, Acides aminés, Carbonate de bis-trichlorométhyle, N-Arylsulfonyloxazolidin-2-ones

Ahmed Ould Aliyenne 1 ; Jamil Kraïem 1 ; Yakdhane Kacem 1 ; Béchir Ben Hassine 1

1 Laboratoire de synthèse organique asymétrique et catalyse homogène, faculté des sciences de monastir, avenue de l'Environnement, 5019 Monastir, Tunisia
@article{CRCHIM_2007__10_3_251_0,
     author = {Ahmed Ould Aliyenne and Jamil Kra{\"\i}em and Yakdhane Kacem and B\'echir Ben Hassine},
     title = {Synthesis of new chiral {\protect\emph{N}-arylsulfonyl-1,3-oxazolidin-2-ones} from \ensuremath{\alpha}-amino acids},
     journal = {Comptes Rendus. Chimie},
     pages = {251--258},
     publisher = {Elsevier},
     volume = {10},
     number = {3},
     year = {2007},
     doi = {10.1016/j.crci.2006.10.004},
     language = {en},
}
TY  - JOUR
AU  - Ahmed Ould Aliyenne
AU  - Jamil Kraïem
AU  - Yakdhane Kacem
AU  - Béchir Ben Hassine
TI  - Synthesis of new chiral N-arylsulfonyl-1,3-oxazolidin-2-ones from α-amino acids
JO  - Comptes Rendus. Chimie
PY  - 2007
SP  - 251
EP  - 258
VL  - 10
IS  - 3
PB  - Elsevier
DO  - 10.1016/j.crci.2006.10.004
LA  - en
ID  - CRCHIM_2007__10_3_251_0
ER  - 
%0 Journal Article
%A Ahmed Ould Aliyenne
%A Jamil Kraïem
%A Yakdhane Kacem
%A Béchir Ben Hassine
%T Synthesis of new chiral N-arylsulfonyl-1,3-oxazolidin-2-ones from α-amino acids
%J Comptes Rendus. Chimie
%D 2007
%P 251-258
%V 10
%N 3
%I Elsevier
%R 10.1016/j.crci.2006.10.004
%G en
%F CRCHIM_2007__10_3_251_0
Ahmed Ould Aliyenne; Jamil Kraïem; Yakdhane Kacem; Béchir Ben Hassine. Synthesis of new chiral N-arylsulfonyl-1,3-oxazolidin-2-ones from α-amino acids. Comptes Rendus. Chimie, Volume 10 (2007) no. 3, pp. 251-258. doi : 10.1016/j.crci.2006.10.004. https://comptes-rendus.academie-sciences.fr/chimie/articles/10.1016/j.crci.2006.10.004/

Version originale du texte intégral

1 Introduction

1,3-Oxazolidin-2-ones are structural components of many compounds that display pharmacological properties [1–11]. Furthermore, they have also been used as chiral auxiliaries and intermediates in asymmetric synthesis of numerous pharmaceutical products [12,13].

During the past few years, significant progress has been made in the discovery of new biologically active N-aryl and N-alkyloxazolidin-2-ones [14–16]. However, the N-sulfonylated oxazolidin-2-ones were not sufficiently elaborated, and only few reports have described the synthesis of N-tosyloxazolidin-2-ones [17–19].

Several methods have been employed for the synthesis of racemic and optically active oxazolidin-2-ones. One of the most efficient methods to build the heterocyclic carbamate involves the condensation of 1,2-amino alcohols with carbonyl derivatives such as phosgene [20], trichloromethyl chloroformate [18], bis-(trichloromethyl) carbonate [21], isocyanates [12], chloroformates [22], ureas [23], or diethylcarbonate [24]. The catalyzed addition of CO2 to aziridines has also been employed to prepare racemic N-tosyloxazolidin-2-ones [17].

Izuhara et al. [18] have described a four-step synthesis of the optically pure 4-benzyl-3-tosyloxazolidin-2-one starting from (l)-phenylalanine. In this sequence, the trichloromethyl chloroformate has been employed as a carbonylating agent. In this work, we describe a three-step synthesis of a variety of new chiral N-arylsulfonyloxazolidin-2-ones, using the same strategy cited above. We have employed the bis-(trichloromethyl) carbonate (BTC) instead of the trichloromethyl chloroformate, since it appears to be safer due to its lower vapor pressure and higher stability [25].

2 Results and discussion

Enantiomerically pure N-arylsulfonyloxazolidin-2-ones are prepared in three steps from commercially available (d)- and (l)-amino acid. As illustrated in Scheme 1, sulfonylation of α-amino acids with arylsulfonylchlorides, in a two-phase mixture of i-PrNEt2 in acetone and aqueous NaOH, leads to the N-arylsulfonyl amino acids 1ap, which were then reduced to the N-arylsulfonyl amino alcohols 2ap with good to excellent yields (Table 1) by use of lithium aluminium hydride in THF or (THF:Et2O). The same procedure has been employed by Berry and Craig [26] to prepare N-tosyl-α-amino alcohols from α-amino acids. These authors have determined the enantiomeric purity of N-tosyl-α-amino alcohols (entry 2mp) by the formation of the corresponding MTPA esters [27], the minor diastereoisomers have not been detected in the 500 MHz 1H NMR spectrum of the crude product [26].

Scheme 1

Synthesis of N-arylsulfonyl-α-amino alcohols.

Table 1

Preparation of N-arylsulfonyl-α-amino alcohols

EntryRArConfig.[α]Dm.p. (°C)Yields (%)
2ai-PrC6H5S−1076–7898
2bMeC6H5S+15Oil97
2ci-BuC6H5S+18102–10499
2dPhC6H5R−10114–11698
2eBnC6H5S+18.764–6695
2fs-BuC6H5S+2558–6099
2gMe2-NaphthylS+2382–8482
2hi-Pr2-NaphthylS−1096–9886
2is-Bu2-NaphthylS+18112–11485
2jBn2-NaphthylS+22106–10875
2ks-Bup-H3C–C6H4S−1580–8198
2lPhp-H3C–C6H4R−1093–9497
2mi-Prp-H3C–C6H4S+16.888–8998 (99)a
2ni-Bup-H3C–C6H4S+23.7105–10696 (98)a
2oBnp-H3C–C6H4S−1574–7597 (99)a
2pMep-H3C–C6H4S+15.857–5898 (100)a

a Chemical yields 2mp reported by Berry and Craig [26].

As far as we know, compounds 2al were prepared for the first time during this study. Compounds 2mp were prepared by Barry and Craig [26].

Subsequent reaction of compounds 2ap with BTC, in the presence of Et3N at −78 °C to r.t., provided the corresponding N-arylsulfonyloxazolidin-2-ones 3ap in excellent yields without racemization, as confirmed by chiral HPLC analysis on tow compounds (entries 3c and 3h) (Scheme 2).

Scheme 2

Synthesis of N-arylsulfonyloxazolidin-2-ones.

In Table 2, are given the chemical yields and the physical properties of compounds 3ap, which have not been reported to date, except compound 3p.

Table 2

Preparation of N-arylsulfonyloxazolidin-2-ones

EntryRArConfig.m.p. (°C)[α]DYields (%)
3aBnC6H5S107–109+38.396
3bi-PrC6H5S99–101+56.895
3cMeC6H5S60–62+45.095
3di-BuC6H5S139–141+39.696
3ePhC6H5R118–120−13.697
3fs-BuC6H5S144–146+60.095
3gMe2-NaphthylS129–131+40.188
3hi-Pr2-NaphthylS141–143+16.785
3is-Bu2-NaphthylS130–132+60.081
3jBn2-NaphthylS126–128+71.479
3ki-Prp-H3C–C6H4S115–118+58.295
3li-Bup-H3C–C6H4S151–153+38.496
3ms-Bup-H3C–C6H4S170–172+41.095
3nMep-H3C–C6H4S117–119+52.297
3oPhp-H3C–C6H4R149–151−39.595
3pBnp-H3C–C6H4S136–138+36.296

3 Conclusion

We have synthesized, in good yields, a variety of new chiral N-arylsulfonyloxazolidin-2-ones from their corresponding α-amino acids. The test of the biological activity and the study of synthetic properties of these new products are under investigation in our laboratory.

4 Experimental section

TLC was performed on Merck 60F-254 silica gel plates (layer thickness 0.25 mm). Column chromatography was performed on silica gel (70–230 mesh) using ethylacetate and cyclohexane mixture as eluents. Melting points were determined on a Electrothermal 9002 apparatus and are uncorrected. 1H NMR spectra were recorded at 300 MHz. All chemical shifts are reported as δ values (ppm) relative to internal tetramethylsilane. CH2Cl2, THF were respectively distilled over CaH2 and Na/benzophenone. Elemental analyses were carried out by ‘Service de microanalyse’ of ‘Institut national de recherche et d'analyse physico-chimique de Tunis’. HPLC analyses were conducted on a methanol/hexane [70:30] system with a UV detector at 254 nm, using a Chirobiotic V column (250 × 46 mm) and a flow rate of 0.6 mL/min.

N-Arylsulfonyl amino alcohols 2ap were prepared according to literature [26]; compounds 2mp were reported by Berry and Craig [26].

4.1 (2S)-N-(Phenylsulfonyl)valinol: 2a

Yield = 98%; m.p.: 76–78 °C [hexane:ethylacetate (90:10)]. IR (cm−1): νNH = 3215, νOH = 3493; [α]D = −10 (c = 1, CHCl3). 1H NMR (300 MHz, CDCl3): 0.70–0.79 (2d, 6H); 1.73–1.82 (m, 1H); 2.22 (s, 1H); 3.03–3.09 (m, 1H); 3.54–361 (m, 2H); 5.24 (d, 1H); 7.28–7.60 (m, 3H); 7.92 (d, 1H). 13C NMR (75 MHz, CDCl3): (18.80, 19.49, 2CH3–); (29.83, –CH–); (61.48, CH–NH–); (63.41, –CH2–O–); (127.49–140.93, Carom). Anal. calc. for C11H17NO3S (243.32): C, 54.30; H, 7.04; N, 5.76. Found: C, 54.20; H, 7.20; N, 5.72.

4.2 (2S)-N-(Phenylsulfonyl)alaninol: 2b

Yield = 97%; oil; [α]D = +15 (c = 0.6, CHCl3). IR (cm−1): νNH = 3217, νOH = 3477. 1H NMR (300 MHz, CDCl3): 0.98 (d, 3H); 3.01–3.06 (m, 1H); 3.08 (s, 1H); 3.37–3.58 (m, 3H); 5.75 (s, 1H); 7.48–7.60 (m, 3H); 7.91 (d, 2H). 13C NMR (75 MHz, CDCl3): (17.28, 1CH3–); (51.91, –CH–NH–); (66.47, –CH2–O–); (127.35 and 141.01, Carom). Anal. calc. for C9H13NO3S (215.27): C, 50.22; H, 6.09; N, 6.51. Found: C, 50.10; H, 6.10; N, 6.42.

4.3 (2S)-N-(Phenylsulfonyl)leucinol: 2c

Yield = 99%; m.p.: 102–104 °C [hexane:ethylacetate (90:10)]; [α]D = +18 (c = 1, CHCl3). IR (cm−1): νNH = 3201, νOH = 3397. 1H NMR (300 MHz, CDCl3): 0.61–0.68 (2d, 6H); 1.22–1.51 (m, 2H); 3.02 (s, 1H); 3.17–3.56 (m, 3H); 5.25 (d, 1H); 7.30–7.53 (m, 3H); 7.86 (d, 2H). 13C NMR (75 MHz, CDCl3): (20.24, 22.30, 2CH3–); (38.75, –CH2–); (51.72, CH–NH–); (64.92, –CH2–O–); (126.48–140.25, Carom). Anal. calc. for C12H19NO3S (257.35): C, 56.01; H, 7.44; N, 5.44. Found: C, 55.80; H, 7.42; N, 5.39.

4.4 (2S)-N-(Phenylsulfonyl)phenylglycinol: 2d

Yield = 98%; m.p.: 114–116 °C [hexane:ethylacetate (90:10)]; [α]D = −10 (c = 0.5, CHCl3). IR (cm−1): νNH = 3302, νOH = 3477. 1H NMR (300 MHz, CDCl3): 3.35 (s, 1H); 3.72–3.75 (m, 2H); 4.07–4.59 (m, 1H); 6.25 (d, 1H); 7.04–7.37 (m, 10H). 13C NMR (75 MHz, CDCl3): (60.23, CH–NH–); (66.49, –CH2–O–); (126.76–140.56, Carom). Anal. calc. for C14H15NO3S (277.34): C, 60.63; H, 5.45; N, 5.05. Found: C, 60.53; H, 5.42; N, 5.10.

4.5 (2S)-N-(Phenylsulfonyl)phenylalaninol: 2e

Yield = 95%; m.p.: 64–66 °C [hexane:ethylacetate (90:10)]; [α]D = +18.7 (c = 0.5, CHCl3). IR (cm−1): νNH = 3193, νOH = 3416. 1H NMR (300 MHz, CDCl3): 2.64–2.83 (dd, 2H); 3.46–3.70 (m, 3H); 5.40 (d, 1H); 6.90–7.73 (m, 10H). 13C NMR (75 MHz, CDCl3): (38.10, –CH2–); (57.22, –CH–NH–); (64.36, –CH2–O–); (126.76–140.30, Carom). Anal. calc. for C15H17NO3S (291.36): C, 61.83; H, 5.88; N, 4.81. Found: C, 61.72; H, 5.80; N, 5.80.

4.6 (2S, 3S)-N-(Phenylsulfonyl)isoleucinol: 2f

Yield = 99%; m.p.: 58–60 °C [hexane:ethylacetate (90:10)]; [α]D = +25 (c = 0.6, CHCl3). IR (cm−1): νNH = 3216, νOH = 3408. 1H NMR (300 MHz, CDCl3): 0.69 (d, 3H); 0.86 (t, 3H); 1.02 (m, 2H); 1.41–1.52 (m, 2H); 2.35 (s, 1H); 3.15–3.24 (m, 1H); 3.52–3.54 (m, 2H); 5.09 (d, 1H); 7.23–7.51 (m, 3H); 7.86 (d, 2H). 13C NMR (75 MHz, CDCl3): (13.24, 22.91, 2CH3–); (25.39, 35.27, 2-CH–); (60, CH–NH–); (60.65, –CH2–O–); (127.34–142.58, Carom). Anal. calc. for C12H19NO3S (257.35): C, 56.01; H, 7.44; N, 5.44. Found: C, 56.10; H, 7.52; N, 5.42.

4.7 (2S)-N-(2-Naphthylsulfonyl)alaninol: 2g

Yield = 82%; m.p.: 82–84 °C [hexane:ethylacetate (90:10)]; [α]D = +23 (c = 1, CHCl3). IR (cm−1): νNH = 3175, νOH = 3327. 1H NMR (300 MHz, DMSO): 1.81 (d, 3H); 2.21 (s, 1H); 3.72–4.64 (m, 3H); 5.64 (s, 1H); 7.58–7.81 (m, 2H); 7.90–8.18 (m, 4H); 8.69 (s, 1H). 13C NMR (75 MHz, DMSO): (20.11, CH3–); (56.86, CH–NH–); (70.89, –CH2–O–); (119.73–13251, Carom).

4.8 (2S)-N-(2-Naphthylsulfonyl)valinol: 2h

Yield = 85%; m.p.: 96–98 °C [hexane:ethylacetate (90:10)]; [α]D = −10 (c = 1, CHCl3). IR (cm−1): νNH = 3187, νOH = 3491. 1H NMR (300 MHz, DMSO): 0.61–0.89 (2d, 6H); 2.05 (s, 1H); 3.89–4.51 (m, 3H); 5.82 (d, 1H); 7.60–7.73 (m, 2H); 7.89–8.05 (m, 4H); 8.54 (s, 1H). 13C NMR (75 MHz, DMSO): (16.27, 20.07, 2CH3–); (30.10, –CH–); (61.20, CH–NH–); (66.92, –CH2–O–); (120.12–1139.75, Carom). Anal. calc. for C15H19NO3S (293.38): C, 61.41; H, 6.53; N, 4.77. Found: C, 60.80; H, 7.10; N, 4.62.

4.9 (2S, 3S)-N-(2-Naphthylsulfonyl)isoleucinol: 2i

Yield = 86%; m.p.: 112–114 °C [hexane:ethylacetate (90:10)]; [α]D = +18 (c = 1, CHCl3). IR (cm−1): νNH = 3217, νOH = 3512. 1H NMR (300 MHz, DMSO): 0.81 (d, 3H); 0.83–0.99 (t, 3H); 1.24–1.42 (m, 2H); 1.57–2.74 (m, 1H); 2.18 (s, 1H); 3.86–4.29 (m, 3H); 5.71 (d, 1H); 7.18–7.41 (m, 2H); 7.68–8.27 (m, 4H); 8.83 (s, 1H). 13C NMR (75 MHz, DMSO): (1125, 13.08, 2CH3–); (26.24, –CH–) (36.18, –CH2–); (60.64, CH–NH–); (66.71, –CH2–O–); (122.08–139.16, Carom).

4.10 (2S)-N-(2-Naphthylsulfonyl)phenylalaninol: 2j

Yield = 75%; m.p.: 106–108 °C [hexane:ethylacetate (90:10)]; [α]D = +22 (c = 1, CHCl3). IR (cm−1): νNH = 3211, νOH = 3519. 1H NMR (300 MHz, DMSO): 2.09 (s, 1H); 2.82–2.89 (m, 1H); 3.41–3.48 (m, 1H); 3.98–4.12 (m, 2H); 4.57–4.62 (m, 1H); 5.75 (d, 1H); 7.21–7.45 (m, 5H); 7.62–7.74 (m, 2H); 8.01–8.16 (m, 4H); 8.74 (s, 1H). 13C NMR (75 MHz, DMSO): (40.21, –CH2–); (57.51, CH–N–); (67.95, –CH2–O–); (121.75–136.93, Carom).

4.11 (2S)-N-(4-Methylbenzenesulfonyl)isoleucinol: 2k

Yield = 98%; m.p.: 80–81 °C [hexane:ethylacetate (90:10)]; [α]D = −15 (c = 1, CHCl3). IR (cm−1): νNH = 3300, νOH = 3481. 1H NMR (300 MHz, CDCl3): 0.75 (d, 3H); (t, 3H); 0.91 (m, 2H); 1.35–1.49 (m, 2H); 2.2 (s, 1H); 2.42 (s, 3H); 3.09–3.13 (m, 1H); 3.55–3.56 (m, 2H); 5.1 (d, 1H); 7.28–7.79 (AA′BB′, 4H). 13C NMR (75 MHz, CDCl3): (11.72–21.91, 3CH3–); (25.60, 36.75, 2-CH–); (60.11 and 60.78, CH–NH–, –CH2–O–); (127.12–143.50, Carom). MS: C13H21NSO3; MW = 271 g/mol; m/z = 240 (C11H18NSO3+, 51%); m/z = 155 (C7H7SO2+, 67%); m/z = 91 (C7H7+, 100%).

4.12 (2S)-N-(4-Methylbenzenesulfonyl)phenylglycinol: 2l

Yield = 97%; m.p.: 93–94 °C [hexane:ethylacetate (90:10)]; [α]D = −10 (c = 1, CHCl3). IR (cm−1): νNH = 3319, νOH = 3396. 1H NMR (300 MHz, CDCl3): 2.4 (s, 3H); 2.68–2.76 (dd, 2H); 3.49–3.65 (m, 3H); 5.15 (d, 1H); 6.95–7.58 (m, 9H). 13C NMR (75 MHz, CDCl3): (21.61, CH3–); (61.24, CH–NH–); (67.08, –CH2–O–); (126.67–141.27, Carom). MS: C13H21NSO3; MW = 305 g/mol; m/z = 274 (C14H16NSO3+, 8%); m/z = 214 (C7H9NSO3+, 38%); m/z = 155 (C7H7SO2+, 50%); m/z = 91 (C7H7+, 100%).

4.13 Preparation of (4S)-3-(phenylsulfonyl)-4-benzyloxazolidin-2-one: 3a

To a solution of bis-(trichloromethyl)carbonate (0.43 g, 1.44 mmol, 0.3 eq) in CH2Cl2 (20 mL) at −78 °C was slowly added a solution of N-(phenylsulfonyl)phenylalaninol 2e (1.07 g, 3.68 mmol) in CH2Cl2 (40 mL). After 15 min of stirring, triethylamine (10 mmol, 1.4 mL, 3 eq) in CH2Cl2 (80 mL) was added dropwise maintaining the temperature below −70 °C. The resulting mixture was stirred at −78 °C for 5 min and then the ethylacetate–N2 (liquid) bath was removed. The reaction mixture was stirred at room temperature for 2 h and washed with 1 N HCl (50 mL) and brine (3 × 25). Evaporation of the solvent under reduced pressure gave a residue, which was purified by chromatography on silica gel using [cyclohexane/ethylacetate (8:2)], as mobile phase.

Yield = 96%; m.p.: 107–109 °C [hexane:ethylacetate (90:10)]; [α]D = +38.3 (c = 1, CHCl3). IR (cm−1): νCO = 1772. 1H NMR (300 MHz, CDCl3): 2.83–2.88 (m, 1H); 3.49–3.55 (m, 1H); 4.11–4.20 (m, 2H); 4.65–4.73 (m, 1H); 7.02–7.70 (m, 10H). 13C NMR (75 MHz, CDCl3): (40.13, –CH2–); (58.41, CH–N–); (67.06, –CH2–O–); (127.99–138.48, Carom); (152.38, CO). MS: C16H15NO4S; MW = 317 g/mol; m/z = 253 (C16H15NO2+, 64%); m/z = 141 (C6H5O2S+, 81%); m/z = 91 (C7H7+, 100%); m/z = 77 (C6H5+, 43%). Anal. calc. for C16H15NO4S (317.36): C, 60.55; H, 4.76; N, 4.41. Found: C, 60.10; H, 4.32; N, 4.20.

4.14 (4S)-3-(Phenylsulfonyl)-4-i-propyloxazolidin-2-one: 3b

Compound 3b (90:10); [α]D = +58.8 (c = 0.5, CHCl3). IR (cm−1): νCO = 1761. 1H NMR (300 MHz, CDCl3): 0.70–0.94 (2d, 6H); 2.41–2.52 (m, 1H); 4.14–4.48 (m, 3H); 7.54–8.11 (m, 5H). 13C NMR (75 MHz, CDCl3): (14.30, 18.16, 30.24, 3CH3–); (62.08, CH–NH–); (63.90, –CH2–O–); (128.74–138.46, Carom); (152.79, CO). MS: C12H15NO4S; MW = 269 g/mol; m/z = 226 (C9H8NO4S+, 38%); m/z = 205 (C12H15NO2+, 12%); m/z = 176 (C9H8NO2+, 31%); m/z = 141 (C7H7SO2+, 100%); m/z = 77 (C6H5+, 67%). Anal. calc. for C12H15NO4S (269.32): C, 53.52; H, 5.61; N, 5.20. Found: C, 53.40; H, 5.52; N, 5.13.

4.15 (4S)-3-(Phenylsulfonyl)-4-methyloxazolidin-2-one: 3c

Yield = 95%; m.p.: 60–62 °C [hexane:ethylacetate (90:10)]; [α]D = +45 (c = 1, CHCl3). IR (cm−1): νCO = 1761. 1H NMR (300 MHz, CDCl3): 1.48 (d, 3H); 3.87–3.91 (m, 1H); 4.37–4.56 (m, 2H); 7.50–8.03 (m, 5H). 13C NMR (75 MHz, CDCl3): (20.66, CH3–); (53.71, CH–NH–); (69.70, –CH2–O–); (128.31–138.05, Carom); (152.17, CO). MS: C10H11NO4S; MW = 241 g/mol; m/z = 241 M+, 7%); m/z = 226 (C9H8NO4S+, 30%); m/z = 177 (C10H11NO2+, 55%); m/z = 141 (C6H5SO2+, 100%); m/z = 77 (C6H5+, 57%). Anal. calc. for C10H11NO4S (241.26): C, 49.78; H, 4.60; N, 5.81. Found: C, 49.72; H, 4.53; N, 5.60.

Enantiomeric purity of 3c was determined by HPLC analyses on Chirobiotic V column (250 × 46 mm) with a flow rate of 0.6 mL/min. Mobile phase methanol/hexane [70:30]; retention times: (4S)-3-(phenylsulfonyl)-4-methyloxazolidin-2-one 10.4 min; (4R)-3-(phenylsulfonyl)-4-methyloxazolidin-2-one 15.2 min.

4.16 (4S)-3-(Phenylsulfonyl)-4-i-butyloxazolidin-2-one: 3d

Yield = 96%; m.p.: 139–141 °C [hexane:ethylacetate (90:10)]; [α]D = +39.6 (c = 0.5, CHCl3). IR (cm−1): νCO = 1770. 1H NMR (300 MHz, CDCl3): 0.90–1.05 (m, 6H); 1.56–1.67 (m, 2H); 1.94–2.04 (m, 1H); 4.05–4.09 (m, 1H); 4.36–452 (m, 2H); 7.54–8.08 (m, 5H). 13C NMR (75 MHz, CDCl3): (21.44, 23.61, 24.67, 3CH3–); (42.87, –CH2–); (56.27, CH–NH–); (68.15, –CH2–O–); (128.41–138.21, Carom); (152, CO). MS: C13H17NO4S; MW = 283 g/mol; m/z = 219 (C13H17NO2+, 13%); m/z = 162 (C9H8NO2+, 24%); m/z = 141 (C6H5SO2+, 100%); m/z = 77 (C6H5+, 67%). Anal. calc. for C13H17NO4S (283.34): C, 55.11; H, 6.05; N, 494. Found: C, 55.01; H, 6.17; N, 4.83.

4.17 (4R)-3-(Phenylsulfonyl)-4-phenyloxazolidin-2-one: 3e

Yield = 97%; m.p.: 118–120 °C [hexane:ethylacetate (90:10)]; [α]D = −13.6 (c = 1, CHCl3). IR (cm−1): νCO = 1775. 1H NMR (300 MHz, CDCl3): 4.27–4.31 (m, 1H); 4.71–4.77 (t, 1H); 5.42–5.46 (m, 1H); 7.19–7.55 (m, 10H). 13C NMR (75 MHz, CDCl3): (60.41, CH–NH–); (70.51, –CH2–O–); (127.12–137.68, Carom); (152.02, CO). MS: C15H13NO4S; MW = 303 g/mol; m/z = 239 (C15H13O2N+, 65%); m/z = 141 (C6H5O2S+, 100%); m/z = 77 (C6H5+, 58%). Anal. calc. for C15H13NO4S (303.33): C, 59.40; H, 4.32; N, 4.62. Found: C, 59.20; H, 4.21; N, 4.65.

4.18 (4S)-3-(Phenylsulfonyl)-4-[(1′S)-1′-methylpropyl]oxazolidin-2-one: 3f

Yield = 95%; m.p.: 144–146 °C [hexane:ethylacetate (90:10)]; [α]D = 60 (c = 1, CHCl3). IR (cm−1): νCO = 1772. 1H NMR (300 MHz, CDCl3): 0.72 (d, 3H); 0.96–1.00 (t, 3H); 1.09–1.34 (m, 2H); 2.22 (m, 1H); 4.12–4.16 (m, 1H); 4.25–4.31 (t, 1H); 4.53–4.56 (m, 1H); 7.55–8.11 (m, 5H). 13C NMR (75 MHz, CDCl3): (11.68, 12.19, 2CH3–); (25.65, –CH–); (37.05, –CH2–); (61.05, CH–NH–); (63.94, –CH2–O–); (128.76–138.40, Carom); (152.87, CO). MS: C13H17NO4S; MW = 283 g/mol; m/z = 219 (C13H17NO2+, 17%); m/z = 226 (C9H8NO4S+, 15%); m/z = 141 (C6H5SO2+, 100%); m/z = 77 (C6H5+, 63%). Anal. calc. for C13H17NO4S (283.34): C, 55.11; H, 6.05; N, 4.94. Found: C, 55.10; H, 5.76; N, 4.80.

4.19 (4S)-3-(2-Naphthylsulfonyl)-4-methyloxazolidin-2-one: 3g

Yield = 88%; m.p.: 129–131 °C [hexane:ethylacetate (90:10)]; [α]D = +40.1 (c = 0.5, CHCl3). IR (cm−1): νCO = 1762. 1H NMR (300 MHz, CDCl3): 1.59 (d, 3H); 3.93–4.66 (m, 3H); 7.62–7.73 (m, 2H); 7.92–8.05 (m, 4H); 8.68 (s, 1H). 13C NMR (75 MHz, CDCl3): (21.19, CH3–); (54.04, CH–NH–); (69.96, –CH2–O–); (122.94–135.94, Carom); (152.47, CO). MS: C14H13NO4S; MW = 291 g/mol; m/z = 291 (M+, 13%); m/z = 227 (C14H13NO2+, 35%); m/z = 168 (C12H10N+, 26%); m/z = 127 (C10H7+, 100%). Anal. calc. for C14H13NO4S (291.32): C, 57.72; H, 4.50; N, 4.81. Found: C, 57.62; H, 4.41; N, 4.62.

4.20 (4S)-3-(2-Naphthylsulfonyl)-4-i-propyloxazolidin-2-one: 3h

Yield = 85%; m.p.: 141–143 °C [hexane:ethylacetate (90:10)]; [α]D = +16.7 (c = 0.5, CHCl3). IR (cm−1): νCO = 1766. 1H NMR (300 MHz, CDCl3): 0.74–0.97 (2d, 6H); 4.14–4.53 (m, 3H); 7.61–7.72 (m, 2H); 7.91–8.02 (m, 4H); 8.68 (s, 1H). 13C NMR (75 MHz, CDCl3): (14.39, 18.17, 2CH3–); (30.13, –CH–); (62.14, CH–NH–); (63.94, –CH2–O–); (122.57–135.91, Carom); (152.87, CO). MS: C17H19NO4S; MW = 333 g/mol; m/z = 319 (M+, 11%); m/z = 212 (C13H10NO2+, 31%); m/z = 191 (C10H7NO2S+, 52%); m/z = 127 (C10H7+, 100%). Anal. calc. for C16H17NO4S (319.38): C, 60.17; H, 5.37; N, 4.39. Found: C, 59.95; H, 5.11; N, 4.44.

Enantiomeric purity of 3c was determined by HPLC analyses on Chirobiotic V column (250 × 46 mm) with a flow rate of 0.6 mL/min. Mobile phase methanol/hexane [70:30]; retention times: (4S)-3-(2-naphthylsulfonyl)-4-i-propyloxazolidin-2-one 11.2 min; (4R)-3-(2-naphthylsulfonyl)-4-i-propyloxazolidin-2-one 13.3 min.

4.21 (4S)-3-(2-Naphthylsulfonyl)-4-[(1′S)-1′-methylpropyl]oxazolidin-2-one: 3i

Yield = 87%; m.p.: 130–132 °C [hexane:ethylacetate (90:10)]; [α]D = +60 (c = 1, CHCl3). IR (cm−1): νCO = 1776. 1H NMR (300 MHz, CDCl3): 0.74 (d, 3H); 0.98–1.02 (t, 3H); 1.16–1.37 (m, 2H); 2.04–2.17 (m, 1H); 4.13–4.61 (m, 3H); 7.12–7.15 (m, 2H); 7.62–8.05 (m, 4H); 8.69 (s, 1H). 13C NMR (75 MHz, CDCl3): (11.75, 12.11, 2CH3–); (25.68, –CH–); (37.20, –CH2–); (61.11, CH–NH–); (63.94, –CH2–O–); (122.93–135.91, Carom); (152.93, CO). MS: C17H19NO4S; MW = 333 g/mol; m/z = 333 (M+, 7%); m/z = 212 (C13H10NO2+, 23%); m/z = 191 (C10H7NO2S+, 64%); m/z = 127 (C10H7+, 100%). Anal. calc. for C17H19NO4S (333.40): C, 61.24; H, 5.74; N, 4.20. Found: C, 61.20; H, 5.72; N, 4.10.

4.22 (4S)-3-(2-Naphthylsulfonyl)-4-benzyloxazolidin-2-one: 3j

Yield = 79%; m.p.: 107–109 °C [hexane:ethylacetate (90:10)]; [α]D = +71.4 (c = 0.5, CHCl3). IR (cm−1): νCO = 1773. 1H NMR (300 MHz, CDCl3): 2.84–2.93 (m, 1H); 3.57–3.63 (m, 1H); 4.10–4.27 (m, 2H); 4.71–4.80 (m, 1H); 7.15–7.39 (m, 5H); 7.64–7.75 (m, 2H); 7.95–8.11 (m, 4H); 8.74 (s, 1H). 13C NMR (75 MHz, CDCl3): (40.26, –CH2–); (58.49, CH–N–); (67.05, –CH2–O–); (122.95–135.99, Carom); (152.42, CO). MS: C17H19NO4S; MW = 367 g/mol; m/z = 212 (C13H10NO2+, 15%); m/z = 191 (C10H7NO2S+, 72%); m/z = 127 (C10H7+, 100%); m/z = 91 (C7H7+, 100%). Anal. calc. for C20H17NO4S (367.42): C, 65.38; H, 4.66; N, 3.81. Found: C, 65.32; H, 4.62; N, 3.82.

4.23 (4S)-3-(4-Methylbenzenesulfonyl)-4-i-propyloxazolidin-2-one: 3k

Yield = 95%; m.p.: 115–117 °C [hexane:ethylacetate (90:10)]; [α]D = +58.2 (c = 0.5, CHCl3). IR (cm−1): νCO = 1770. 1H NMR (300 MHz, CDCl3): 0.72–0.92 (2d, 6H); 2.43 (s, 3H); 4.12–4.45 (m, 3H); 7.32–7.96 (AA′BB′, 4H). 13C NMR (75 MHz, CDCl3): (14.3–22, 3CH3–); (30.26, –CH–); (62.05, CH–NH–); (63.91, –CH2–O–); (128.7–147.9, Carom); (152.8, CO). MS: C13H17NSO4; MW = 283 g/mol; m/z = 240 (C10H10NSO4+, 13%); m/z = 219 (C13H17NO2+, 13%); m/z = 176 (C10H10NO2+, 33%); m/z = 155 (C7H7SO2+, 100%); m/z = 91 (C7H7+, 88%). Anal. calc. for C13H17NO4S (283.34): C, 55.11; H, 6.05; N, 4.94. Found: C, 55.40; H, 5.80; N, 4.70.

4.24 (4S)-3-(4-Methylbenzenesulfonyl)-4-i-butyloxazolidin-2-one: 3l

Yield = 96%; m.p.: 151–153 °C [hexane:ethylacetate (90:10)]; [α]D = +38.4 (c = 0.5 CHCl3). IR (cm−1): νCO = 1768. 1H NMR (300 MHz, CDCl3): 0.95–0.98 (m, 6H); 1.58–1.64 (m, 2H); 1.97 (m, 1H); 2.43 (s, 3H); 4.03–4.45 (m, 3H); 7.33–7.95 (AA′BB′, 4H). 13C NMR (75 MHz, CDCl3): (21.7–25.06, 3CH3–); (43.19, –CH2–); (56.59, CH–NH–); (68.48, –CH2–O–); (128.81–145.94, Carom); (152.66, CO). MS: C14H19NSO4; MW = 297 g/mol; m/z = 233 (C14H19NO2+, 7%); m/z = 176 (C10H10NO2+, 15%); m/z = 155 (C7H7SO2+, 100%); m/z = 91 (C7H7+, 71%). Anal. calc. for C14H19NO4S (297.37): C, 56.55; H, 6.44; N, 4.71. Found: C, 55.30; H, 6.32; N, 4.60.

4.25 (4S)-3-(4-Methylbenzenesulfonyl)-4-[(1′S)-1′-methylpropyl]oxazolidin-2-one: 3m

Yield = 95%; m.p.: 170–172 °C [hexane:ethylacetate (90:10)]; [α]D = +41 (c = 1, CHCl3). IR (cm−1): νCO = 1774. 1H NMR (300 MHz, CDCl3): 0.72 (d, 3H); 0.96 (t, 2H); 2.43 (s, 3H); 4.09–4.54 (m, 3H); 7.32–7.96 (AA′BB′, 4H). 13C NMR (75 MHz, CDCl3): (11.54, 11.90, 2CH3–); (25.51, –CH–) (36.89, –CH2–); (61.31, CH–NH–); (63.82, –CH2–O–); (127.32–138.41, Carom); (152.75, CO). MS: C14H19NSO4; MW = 297 g/mol; m/z = 233 (C14H19NO2+, 10%); m/z = 240 (C10H10NSO4+, 18%); m/z = 155 (C7H7SO2+, 100%); m/z = 91 (C7H7+, 58%). Anal. calc. for C14H19NO4S (297.37): C, 56.55; H, 6.44; N, 4.71. Found: C, 56.50; H, 6.42; N, 4.62.

4.26 (4S)-3-(4-Methylbenzenesulfonyl)-4-methyloxazolidin-2-one: 3n

Yield = 97%; m.p.: 117–119 °C [hexane:ethylacetate (90:10)]; [α]D = +52.2 (c = 0.5, CHCl3). IR (cm−1): νCO = 1779. 1H NMR (300 MHz, CDCl3): 1.52 (d, 3H); 2.4 (s, 3H); 3.89–4.57 (m, 3H); 5.15 (d, 1H); 7.33–7.95 (AA′BB′, 4H). 13C NMR (75 MHz, CDCl3): (21–22, 2CH3–); (53.96, CH–NH–); (69.92, –CH2–O–); (128.71–150.95, Carom); (152.50, CO). MS: C11H13NSO4; MW = 255 g/mol; m/z = 255 (M+, 4%); m/z = 254 (C11H12NSO4+, 32%); m/z = 191 (C11H13NO2+, 50%); m/z = 91 (C7H7+, 73%); m/z = 64 (SO2+, 74%). Anal. calc. for C11H13NO4S (255.29): C, 51.75; H, 5.13; N, 5.49. Found: C, 51.70; H, 5.20; N, 5.40.

4.27 (4R)-3-(4-Methylbenzenesulfonyl)-4-phenyloxazolidin-2-one: 3o

Yield = 95%; m.p.:149–151 °C [hexane:ethylacetate (90:10)]; [α]D = −39.5 (c = 0.5, CHCl3). IR (cm−1): νCO = 1774. 1H NMR (300 MHz, CDCl3): 2.37 (d, 3H); 4.25–4.29 (m, 1H); 5.41–5.43 (m, 1H); 7.09–7.31 (m, 9H). 13C NMR (75 MHz, CDCl3): (22.01, 1CH3–); (60.75, CH–NH–); (70.87, –CH2–O–); (127.41–145.59, Carom); (152.45, CO). MS: C16H15NSO4; MW = 317 g/mol; m/z = 253 (C16H15NO2+, 71%); m/z = 91 (C7H7+, 100%); m/z = 77 (C6H5+, 55%). Anal. calc. for C16H15NO4S (317.36): C, 60.55; H, 4.76; N, 4.41. Found: C, 60.52; H, 4.72; N, 4.25.

4.28 (4S)-3-(4-Methylbenzenesulfonyl)-4-benzyloxazolidin-2-one: 3p

Yield = 96%; m.p.: 136–138 °C [hexane:ethylacetate (90:10)]; [α]D = +36.2 (c = 0.5, CHCl3). IR (cm−1): νCO = 1774. 1H NMR (300 MHz, CDCl3): 2.37 (d, 3H); 4.25–4.29 (m, 1H); 5.41–5.43 (m, 1H); 7.09–7.31 (m, 9H). 13C NMR (75 MHz, CDCl3): (22, 1CH3–); (41.25, –CH2–); (60.7, CH–NH–); (70.8, –CH2–O–); (127.40–145.59, Carom); (152.45, CO). MS: C16H15NO4S; MW = 317 g/mol; m/z = 253 (C16H15NO2+, 71%); m/z = 155 (C7H7SO2+, 10%); m/z = 91 (C7H7+, 100%); m/z = 77 (C6H5+, 55%). Anal. calc. for C17H17NO4S (331.39): C, 61.62; H, 5.17; N, 4.23. Found: C, 61.50; H, 5.20; N, 4.20.

Acknowledgments

We are grateful to the DGRSRT (the Direction générale de la Recherche scientifique et de la Rénovation technologique) for grants to ‘Laboratoire de synthèse organique asymétrique et catalyse homogène’.


Bibliographie

[1] B.J. Lohray; B.S. Baskaran; B. Srinivasa Rao; B.T. Reddy; I. Nageswara Tetrahedron Lett., 40 (1999), p. 4855

[2] B. Mallesham; B.M. Rajesh; P.R. Rajamohan; D. Srinivas; T. Sanjay Org. Lett. (2003), p. 963

[3] D. Mark Gleave; Steven J. Brickner J. Org. Chem., 61 (1996), p. 6470

[4] S.J. Brickner, P.R. Manninen, D.A. Vlanowicz, K.D. Lavasz, D.C. Rohrer, 206th ACS National Meeting, Chicago, Il, August, 1993, p. 22; Abst Pap. Am. Chem. Soc., 206 (1–2).

[5] S.J. Brickner, U.S. Patent 5, 231, 188, 1993.

[6] S.J. Brickner, U.S. Patent 5, 247, 090, 1993.

[7] P.E. Keane; J.P. Kan; N. Sontag; M.S. Benedetti J. Pharm. Pharmacol., 31 (1979), p. 752

[8] F. Moureau; J. Wouters; D.P. Vercauteren; S. Collin; G. Everad; F. Durant; F. Ducrey; J.J. Koenig; F.X. Jarreau Eur. J. Med. Chem., 27 (1992), p. 939

[9] F. Moureau; J. Wouters; D.P. Vercauteren; S. Collin; G. Evrard; F. Durant; F. Ducrey; J.J. Koenig; F.X. Jarreau Eur. J. Med. Chem., 29 (1994), p. 269

[10] A. Mai; M. Artico; M. Esposito; G. Sbradella; S. Massa; O. Befani; P. Turini; V. Glovannini; B. Mondovi J. Med. Chem., 45 (2002), p. 1180

[11] A. Madhan; A. Ravi Kumar; B. Venkateswara Rao Tetrahedron: Asymmetry, 12 (2001), p. 2009

[12] D.J. Ager; I. Parakash; D.R. Schaad Chem. Rev., 96 (1996), p. 835

[13] D.J. Ager; I. Parakash; D.R. Schaad Aldrichim. Acta, 30 (1997), p. 3

[14] A. Ghosh; J.E. Sieser; M. Riou; W. Cai; L. Rivera-Ruiz Org. Lett., 5 (2003), p. 2207 (and references cited there in)

[15] C. Lamanna; M.S. Sinicropi; P. Pietrangeli; F. Corbo; C. Franchini; B. Mondovi; M.G. Perrone; A. Scilimati Arch. Org. Chem. (V) (2004), p. 118

[16] A. Ammazzalorso; R. Amoroso; G. Bettoni; B.F. Fantacuzzi; L. Giampietro; C. Maccallini; D. Paludi; M.L. Tricca Il Farmaco, 59 (2004), p. 685

[17] A. Sudo; Y. Morioka; F. Sanda; T. Endo Tetrahedron Lett., 45 (2004), p. 1363

[18] T. Izuhara; W. Yokota; M. Inoue; T. Katoh Heterocycles, 56 (2001), p. 553

[19] M. Tiecco; L. Testaferri; A. Temperini; L. Bagnoli; F. Marini; C. Santi Chem. Eur. J., 10 (2004), p. 1752

[20] O. Tamura; M. Hashimoto; Y. Kobayashi; T. Katoh; K. Nakatani; A. Kamada; I. Hayakawa; T. Akiba; S. Terashima Tetrahedron Lett., 33 (1992), p. 3487

[21] C.L. Gibson; K. Gillon; S. Cook Tetrahedron Lett., 39 (1998), p. 6733

[22] H.J. Knolker; T. Braxmeier Tetrahedron Lett., 39 (1998), p. 9407

[23] M. Suzuki; T. Yamazaki; H. Ohta; K. Shima; K. Ohi; S. Nishiyama; T. Sugai Synlett (2000), p. 189

[24] J.R. Gage; D.A. Evans Org. Synth., 68 (1990), p. 77

[25] L. Cotarca; P. Delogu; A. Nardelli; V. Sunjic Synthesis (1996), p. 553

[26] B.M. Berry; D. Craig Synlett (1992), p. 41

[27] J.A. Dale; D.L. Dull; H.S. Mosher J. Org. Chem., 34 (1969), p. 2543


Commentaires - Politique