反应详情

In a manner similar to the procedure described in Example 21, the titled acid compound was prepared from tert-butyl 7-(2'-tert-butoxycarbonyl-2'-phenylacetamido)-3-(2'-tert-butoxycarbonylvinyl)-3-cephem-4-carboxylate, which ester was prepared by acylating tert-butyl 7-amino-3-(2'-tert-butoxycarbonylvinyl)-3-cephem-4-carboxylate-p-toluene sulfonate as described in Example 6.

1. customwas prepared