Optically active cephalosporin analogs represented by the general formula (I)
wherein R1 represents a hydrogen, a lower alkyl group or a lower acyl group, R2 represents a hydrogen or a protective group of carboxylic acid, and the hydrogens at the 6- and 7-positions have cis configuration, and the salts thereof, are produced by optically selective deacylation of an optically inactive acylated analog. The compounds are useful as intermediates in the preparation of optically active acylated antimicrobial agents.
由通式(I)代表的具有光学活性的
头孢菌素类似物
其中 R1 代表氢、低级烷基或低级酰基,R2 代表氢或
羧酸保护基,6-位和 7-位上的氢具有顺式构型。这些化合物可用作制备光学活性酰化抗菌剂的中间体。