The first stereospecific synthesis of michellamine B
作者:Peter D. Hobbs、Velaparthi Upender、Jyanwei Liu、Daniel J. Pollart、David W. Thomas、Marcia I. Dawson
DOI:10.1039/cc9960000923
日期:——
The dimeric alkaloid michellamine B is synthesized streospecifically by the palladium-catalysed cross-coupling of the 6′-naphthaleneboronic acid of the tetrabenzylated derivative of korupensmine A and the 6′-bromo analogue of the tetrabenzylated derivative of korupensmine B, both of which are prepared by total synthesis.
二聚生物碱小檗胺 B 是通过钯催化四苄基化的 korupensmine A 衍生物的 6′-萘硼酸与四苄基化的 korupensmine B 衍生物的 6′-溴类似物的交叉偶联而合成的。
Stereospecific Syntheses of Michellamines A and C
作者:Peter Hobbs、Velaparthi Upender、Marcia Dawson
DOI:10.1055/s-1997-957
日期:1997.8
The total syntheses of two of the three dimeric naphthylisoquinoline michellamines - A and C - were achieved by Pd-catalyzed cross-coupling of the appropriate 6'-bromo- or 6'-boronic acid-substituted tetrabenzylated korupsensamine A and B derivatives under nonaqueous conditions, followed by deprotection of the octabenzylated products.
在非水条件下,通过钯催化适当的 6'- 溴或 6'- 硼酸取代的四苄基柯鲁普森胺 A 和 B 衍生物的交叉偶联,然后对八苄基产物进行脱保护,实现了三种二聚萘基异喹啉小壳胺中的两种--A 和 C 的全合成。