Disclosed is a process for the stereocontrolled total synthesis of thienamycin, which synthesis proceeds via intermediate II: ##STR1## wherein R.sup.3 is a readily removable carboxyl protecting group.
本发明揭示了一种通过中间体II进行立体控制的
头孢曲松的全合成过程:其中R3是一种易于去除的羧基保护基。