A process for the preparation of an antibacterially active compound of the formula (I):
and salts and esters thereof wherein R1 and R2 independently are hydrogen or an organic group, and R3 is an organic group bonded via a carbon atom to the sulphur atom, which comprises reacting a compound of the formula (II):
wherein R4 is an organic group different to H3 and Ra is hydrogen or a carboxy-blocking group, with a thiol R3SH or reactive derivative thereof. In addition certain compounds within the formula (II) are novel and useful antibacterial agents in their own right.
一种抗菌活性式(I)化合物及其盐和酯的制备工艺,其中 R1 和 R2 分别为氢或有机基团,R3 为通过碳原子与
硫原子键合的有机基团,该工艺包括将式(II)化合物(其中 R4 为与 H3 不同的有机基团,Ra 为氢或羧基阻断基团)与
硫醇 R3SH 或其反应衍
生物反应。 此外,式(II)中的某些化合物本身就是新型的、有用的抗菌剂。