Pyridonecarboxylic acids as antibacterial agents. V. Synthesis of 1-vinyl-1,4-dihydro-4-oxo-1,8- and 1,6-naphthyridine-3-carboxylic acids.
作者:SHINSAKU MISHIO、TOHRU HIROSE、AKIRA MINAMIDA、JUNICHI MATSUMOTO、SHINSAKU MINAMI
DOI:10.1248/cpb.33.4402
日期:——
A series of 7-substituted 1, 4-dihydro-4-oxo-1-vinyl-1, 8- and 1, 6-naphthyridine-3-carboxylic acids (5a-e and 13a-c) was prepared. During the preparation of 5a, unexpected compounds (4, 7 and 8) were also obtained. Structural elucidation of these compounds was achieved on the basis of chemical and spectral (ultraviolet, mass and proton nuclear magnetic resonance) data. The structure-antibacterial activity relationships are discussed.
制备了一系列 7-取代的 1,4-二氢-4-氧代-1-乙烯基-1,8-和 1,6-萘啶-3-羧酸(5a-e 和 13a-c)。在制备 5a 的过程中,还得到了意想不到的化合物(4、7 和 8)。根据化学和光谱(紫外线、质量和质子核磁共振)数据对这些化合物进行了结构阐释。本文讨论了结构与抗菌活性之间的关系。