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Synthesis and Crystal Structure of an (N-Protected amino)-β-lactam Derivative of 1,5-Benzothiazepine

Synthesis and Crystal Structure of an (N-Protected amino)-β-lactam Derivative of 1,5-Benzothiazepine
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摘要 The title compound -(N-protected amino)--lactam (C36H33N2O5ClS), derivative of 1,5-benzothiazepine, was prepared by the reaction of 1,5-benzothiazepine 1 with (4R)- phenyloxazolidylacetyl chloride and characteized by X-ray diffraction analysis. The title compound crystallizes in orthorhombic system, space group P212121 with a=12.293(2), b=26.026(5), c=10.146(2)? V=3246.1?, Z=4, Dc=1.312g/cm3, Mr=641.15, F(000)=1344, μ= 0.228 mm1. The final R=0.0597 and wR=0.1165 for 3226 observed reflections with I ≥ 2?I). The crystal structure shows that the 4-phenyloxazolidyl and phenyl attached to C(8) and C(9) are in cis positions, and no trans product was discovered. So the cyclization to -lactam is stereospecific. The title compound -(N-protected amino)--lactam (C36H33N2O5ClS), derivative of 1,5-benzothiazepine, was prepared by the reaction of 1,5-benzothiazepine 1 with (4R)- phenyloxazolidylacetyl chloride and characteized by X-ray diffraction analysis. The title compound crystallizes in orthorhombic system, space group P212121 with a=12.293(2), b=26.026(5), c=10.146(2)? V=3246.1?, Z=4, Dc=1.312g/cm3, Mr=641.15, F(000)=1344, μ= 0.228 mm1. The final R=0.0597 and wR=0.1165 for 3226 observed reflections with I ≥ 2?I). The crystal structure shows that the 4-phenyloxazolidyl and phenyl attached to C(8) and C(9) are in cis positions, and no trans product was discovered. So the cyclization to -lactam is stereospecific.
出处 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2002年第2期133-135,共3页 结构化学(英文)
基金 Supported by the Natural Foundation of Hebei Province
关键词 1 5-BENZOTHIAZEPINE -LACTAM CYCLOADDITION crystal structure 1,5-benzothiazepine, -lactam, cycloaddition, crystal structure
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