Three steroidal pentaenes (8˜a−c˜) have been synthesized, the key step being the alkylation of the Cu(II) chelates to the ring D precursors (3˜−5˜) by the isothiouronium acetate 1˜ in aqueous solution.
已经合成了三种甾族五烯(8 -ac- ),关键步骤是在
水溶液中通
过乙酸异
硫脲鎓盐1将Cu(II)螯合物烷基化为环D前体(3-5 --5 )。