摘要:
An efficient and convenient method was developed for the synthesis of protected sulfonopeptides via N-chlorosuccimide (NCS)/HCI oxidative chlorination of N-protected 2-aminoallcyl xanthates or thioacetates to the corresponding sulfonyl chlorides followed by aminolysis with amino esters. In the current method, sulfonopeptides containing 1- and 2-substituted taurines were prepared in satisfactory to good yields. It is a useful and efficient strategy for the synthesis of protected sulfonopeptides with functionalized side-chains. (C) 2013 Elsevier Ltd. All rights reserved.