Cyanuric chloride reacted with 3 molar equivalents of pyridine to give 2,4,6-tripyridinio-1,3,5-triazine trichloride, which was found to condense penicillins with alcohols under mild conditions to afford penicillin esters in good yields. Application to preparation of cephalosporin esters also is discussed.
Synthetic studies on .beta.-lactam antibiotics. 12. Stereocontrolled synthesis of 7.alpha.-methoxy-1-oxacephems from 6-epipenicillin G
作者:Shoichiro Uyeo、Ikuo Kikkawa、Yoshio Hamashima、Hisao Ona、Yasuhiro Nishitani、Kyo Okada、Tadatoshi Kubota、Koji Ishikura、Yutaka Ide
DOI:10.1021/ja00509a074
日期:1979.7
TANAKA, MAMORU;KONOIKE, TOSHIRO;YOSHIOKA, MITSURU, SYNTHESIS,(1989) N, C. 197-198