A Facile Synthesis of Lentiginosine Analogues Based on a Highly Regio- and Diastereoselective Allylic Amination Using Chlorosulfonyl Isocyanate
作者:In Su Kim、Qing Ri Li、Guang Ri Dong、Yoo Chang Kim、Yeon Ju Hong、Momi Lee、Ki-Whan Chi、Joa Sub Oh、Young Hoon Jung
DOI:10.1002/ejoc.200901443
日期:2010.3
compounds 2 and 3, was synthesized by the regio- and diastereoselectiveamination of anti-3,4-tribenzyl ether 7 usingchlorosulfonylisocyanate. The reaction of 7 with chlorosulfonylisocyanate in toluene at 0 °C afforded 6 exclusively with a diastereoselectivity of 26:1 in 84 % yield. These results can be explained by the neighboring-group effect, which leads to retention of the stereochemistry.