Synthesis of the C3-C19 segment of phorboxazole B.
Synthesis of the C3-C19 segment of phorboxazole B.
复制标题
佛波唑 B 的 C3-C19 片段的合成。
DOI:
10.1021/ol051039h
复制
发表时间:
2005
期刊:
影响因子:
5.2
通讯作者:
Rychnovsky,ScottD
中科院分区:
文献类型:
--
作者:
Vitale,JustinP;Wolckenhauer,ScottA;Do,NgaM;Rychnovsky,ScottD
Three segment-coupling Prins approaches to the C3−C19 segment of phorboxazole B have been developed. One successful strategy utilized a novel TMSBr-mediated cyclization that proceeded with complete axial selectivity. Displacement of bromide with cesium acetate provided the C13 hydroxyl stereocenter of22. Additionally, treatment of α-acetoxy ether20with TFA enabled a more concise synthesis of the C3−C19 target13by allowing direct access to the equatorial alcohol.