A Facile Synthetic Approach to Nonracemic Substituted Pyrrolo-allocolchicinoids Starting from Natural Colchicine
A Facile Synthetic Approach to Nonracemic Substituted Pyrrolo-allocolchicinoids Starting from Natural Colchicine
复制标题
以天然秋水仙碱为原料制备非外消旋取代的吡咯别别秋水仙素的简便合成方法
DOI:
10.1055/s-0037-1610673
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Fedorov
中科院分区:
文献类型:
--
作者:
Shchegravina;Svirshchevskaya;Schmalz;Fedorov
A six-step semisynthetic approach towards chiral nonracemic pyrrolo-allocolchicinoids starting from naturally occurring colchicine was developed. The synthetic scheme includes an electrocyclic tropolone ring contraction to afford allocolchicinic acid followed by the Curtius reaction, giving the corresponding aniline. The Sandmeyer reaction and copper-mediated hydrazination gave hydrazine-substituted allocolchicine. This was introduced into the Fischer indole synthesis, affording libraries of regioisomeric indole-based allocolchicine congeners.
DOI:
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发表时间:
1949
期刊:
影响因子:
--
作者:
J. Čech;F. Šantavý
通讯作者:
F. Šantavý
DOI:
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发表时间:
2007
期刊:
影响因子:
--
作者:
Jin Yu;Gaoyan Lian;Dan‐Wei Zhang
通讯作者:
Dan‐Wei Zhang