Synthesis of spiroketal-modified avermectin analogs: 23-nor-23-oxa- and 23-nor-23-thia-avermectins
作者:Peter T. Meinke、Stephen P. O'Connor、Michael H. Fisher、Helmut Mrozik
DOI:10.1016/s0040-4039(00)73495-2
日期:1994.7
The concise synthesis of avermectin analogs wherein the C23 carbon has been excised and replaced with an oxygen or sulfur atom is described. The new, heteroatom-substituted avermectins represent isosteres of 22,23-dihydro-avermectin B1a and, in the case of the sulfoxides and sulfones, are isosteric to avermectin B2a. These new avermectins bear diverse functionality at C24 and C25.
描述了阿维菌素类似物的简明合成,其中C23碳已被切除并被氧或硫原子取代。新的杂原子取代的阿维菌素代表22,23-二氢阿维菌素B 1a的等排物,在亚砜和砜的情况下,与阿维菌素B 2a等排。这些新的阿维菌素在C24和C25上具有多种功能。