Stereoselective reactions. IX. Synthetic studies on optically active .BETA.-lactams. I. Chiral synthesis of carbapenam and carbapenem ring systems starting from (S)-aspartic acid.
作者:NOBUO IKOTA、HISANARI SHIBATA、KENJI KOGA
DOI:10.1248/cpb.33.3299
日期:——
A chiral carbapenam ring system ((3R, 5R)-(+)-19 and -20) having the desired absolute configuration at C-5 was synthesized starting from (S)-aspartic acid, and the latter product was further transformed to a chiral carbapenem derivative ((5S, 2'R)-(+)-21) having an (R)-cysteine moiety as a side chain.
从(S)-天冬氨酸出发,合成了具有C-5理想绝对构型的手性碳青霉烯环系统((3R, 5R)-(+)-19和-20),然后将其进一步转化为具有(R)-半胱氨酸侧链的手性碳青霉烯衍生物((5S, 2'R)-(+)-21)。