Concise Assembly of the Polycyclic Frameworks Associated with the Hapalindole and Fischerindole Alkaloids
作者:Martin G. Banwell、Xinghua Ma、Rebecca M. Taylor、Anthony C. Willis
DOI:10.1021/ol062020x
日期:2006.10.1
N-methylindole (4) with 6,6-dibromobicyclo[3.1.0]hexane (5) in the presence of silver tetrafluoroborate affords conjugate 7 in 67% yield. This product can be readily elaborated to compounds 12b and 13b which embody the polycyclic frameworks associated with members of the hapalindole and fischerindole classes of alkaloids. The chiral-auxiliary-substituted 6,6-dibromobicyclo[3.1.0]hexanes 21 and 22 react
[反应:见正文]在四氟硼酸银的存在下,N-甲基吲哚(4)与6,6-二溴双环[3.1.0]己烷(5)的反应以67%的收率得到缀合物7。该产物可以容易地制成化合物12b和13b,其体现了与the生物碱和菲索吲哚类生物碱成员相关的多环骨架。手性辅助取代的6,6-二溴双环[3.1.0]己烷21和22与吲哚反应生成加合物,可能用于标题生物碱的对映选择性全合成。