A New Glycociamidine Ring Precursor: Syntheses of (Z)-Hymenialdisine, (Z)-2-Debromohymenialdisine, and (±)-endo-2-Debromohymenialdisine
摘要:
[GRAPHICS]The synthesis of the C-1,H-5 marine sponge alkaloids, (Z)-hymenialdisine and (Z)-2-debromohymenialdisine, is described. A key step was the condensation between aldisine or its monobromo derivative and a new, efficient imidazolinone-based glycociamidine precursor. In the first case, the main product turned out to be the unprecedented (+/-)-endo-2-debromohymenialdisine.
A New Glycociamidine Ring Precursor: Syntheses of (Z)-Hymenialdisine, (Z)-2-Debromohymenialdisine, and (±)-endo-2-Debromohymenialdisine
摘要:
[GRAPHICS]The synthesis of the C-1,H-5 marine sponge alkaloids, (Z)-hymenialdisine and (Z)-2-debromohymenialdisine, is described. A key step was the condensation between aldisine or its monobromo derivative and a new, efficient imidazolinone-based glycociamidine precursor. In the first case, the main product turned out to be the unprecedented (+/-)-endo-2-debromohymenialdisine.
(Z)-Axinohydantoin and (Z)-debromoaxinohydantoin, two pyrrole–imidazole alkaloids isolated from different marine sponges, possess moderate activities in inhibiting the progress of the cell cycle at different phases. A stereoselectivesynthesis of both natural products was achieved. The key step in the synthetic pathway was the installation of the hydantoin northern ring by using 1-benzoyl-2-methylsulfanyl-1
Synthesis of 2-substituted endo-hymenialdisine derivatives
作者:Qinfei He、Wei Chen、Yong Qin
DOI:10.1016/j.tetlet.2007.01.114
日期:2007.3
The first synthesis of 2-substituted endo-hymenialdisine derivatives 1-4 is described started with 2-substituted pyrroles and 5-substituted pyrrolo-2-carboxylic acids. (c) 2007 Published by Elsevier Ltd.