期刊
JOURNAL OF ANTIBIOTICS
卷 53, 期 2, 页码 171-178出版社
JAPAN ANTIBIOT RES ASSN
DOI: 10.7164/antibiotics.53.171
关键词
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In an effort to increase the insecticidal activity of the spinosyn family of naturally occurring macrolides, the 2'-, 3'- and 4'-O-desmethyl-O-acetyl analogs and the 2'-, 3'-, and 4'-O-desmethoxy analogs have been synthesized. These analogs were prepared synthetically from the minor spinosyn factors H, J, K, L and Q either via direct acylation of the corresponding factor or deoxygenation of an intermediate xanthate. The acylated analogs were all more potent insecticides against Heliothis vivescens larvae than their respective parent factors, but not as potent as spinosyns A or D. The deoxy analogs were also more potent insecticides than their respective parent factors. The 2'-desmethoxy analogs showed, for the first time, analogs with insecticidal potency against H. virescens greater than that of spinosyns A and D, indicating that polarity is not well tolerated in the rhamnose moiety of spinosyn A.
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