Fourteen new derivatives of avermectin B_(1a) and ivermectin B_(1a) were synthesized from C_5-O-triphenylsilyl avermectin B_(1a) and ivermectin B_(1a)(yield from 40% to 83%). Their chemical structures were characteriz...Fourteen new derivatives of avermectin B_(1a) and ivermectin B_(1a) were synthesized from C_5-O-triphenylsilyl avermectin B_(1a) and ivermectin B_(1a)(yield from 40% to 83%). Their chemical structures were characterized by means of IR, ()~1H NMR, ()^(13)C NMR and FAB-MS spectrometries. Some of them show excellent insecticidal activity.展开更多
文摘Fourteen new derivatives of avermectin B_(1a) and ivermectin B_(1a) were synthesized from C_5-O-triphenylsilyl avermectin B_(1a) and ivermectin B_(1a)(yield from 40% to 83%). Their chemical structures were characterized by means of IR, ()~1H NMR, ()^(13)C NMR and FAB-MS spectrometries. Some of them show excellent insecticidal activity.
