A diastereocontrolled synthesis of the spiroketal sub-unit of 22,23-dihydroavermectin B1b has been developed using a formal double condensation at both ends of pentane 2,4-dione with intermediate formation of the ketal .
利用戊烷2,4-二酮的戊端的正式双缩合和缩酮的中间形成,开发了非对映体合成的22,23-dihydroavermectin B 1b的spiroketal亚基。
FEREZOU, J. P.;GAUCHET-PRUNET, J.;JULIA, M.;PANCRAZI, A., TETRAHEDRON LETT., 29,(1988) N 30, C. 3667-3670
作者:FEREZOU, J. P.、GAUCHET-PRUNET, J.、JULIA, M.、PANCRAZI, A.