Pyrylium-mediated transformations of natural products. Part 6. Preparation of pyridinium salts derived from aminoglycosides
作者:Alan R. Katritzky、Yu-Kun Yang、Joan Ellison、Jorge Marquet
DOI:10.1039/p29840000879
日期:——
Kanamycins A and B react with a variety of water-soluble pyrylium ions in aqueous solution specifically at the 6′-primary-alkyl primary amine functions to give the corresponding pyridinium ions in high yield. Neomycin also reacts at only one amino group. Products were characterised by 13C n.m.r. and elemental analysis.
卡那霉素A和B与水溶液中的多种水溶性吡啶鎓离子发生反应,特别是在6'-伯烷基伯胺官能团处,以高收率得到相应的吡啶鎓离子。新霉素也仅在一个氨基上反应。产品通过13 C nmr和元素分析进行表征。
Katritzky, Alan R.; Leahy, David E., Journal of the Chemical Society. Perkin transactions II, 1984, p. 867 - 874
作者:Katritzky, Alan R.、Leahy, David E.
DOI:——
日期:——
KATRITZKY, A. R.;YANG, YU-KUN;GABRIELSEN, B.;MARQUET, J., J. CHEM. SOC. PERKIN TRANS., 1984, N 5, 857-866
作者:KATRITZKY, A. R.、YANG, YU-KUN、GABRIELSEN, B.、MARQUET, J.
DOI:——
日期:——
Pyrylium-mediated transformations of natural products. Part 3. Synthesis of water-soluble pyrylium salts and their preparative reactions with amines
作者:Alan R. Katritzky、Yu-Kun Yang、Bjarne Gabrielsen、Jorge Marquet
DOI:10.1039/p29840000857
日期:——
A series of water-soluble pyryliumsalts and zwitterions has been prepared containing two or three carboxylic or sulphonic acid groups. These pyryliumsalts react in aqueous solution with ammonia to give the corresponding pyridines and with n-butylamine, benzylamine, and the ω-amino groups of lysine to give the corresponding pyridinium systems, usually as betaines. The pyridinium betaines (m.p. > 300
已经制备了一系列含有两个或三个羧酸或磺酸基团的水溶性吡啶鎓盐和两性离子。这些吡啶盐在水溶液中与氨反应生成相应的吡啶,并与正丁胺,苄胺和赖氨酸的ω-氨基反应生成相应的吡啶鎓体系,通常作为甜菜碱。吡啶鎓甜菜碱(mp> 300°C)显示出特征性的13 C nmr光谱,几乎已完全归属。