Synthesis and Oral Activity of Pivaloyloxymethyl 7-((Z)-2-(2-Aminothiazol-4-yl)-2-methoxyiminoacetamido)-3(Z)-(4-methylthiazol-5-yl)vinyl-3-cephem-4-carboxylate(ME1207) and Its Related Compound.
作者:Kenji SAKAGAMI、Kunio ATSUMI、Yuichi YAMAMOTO、Atushi TAMURA、Takashi YOSHIDA、Ken NISHIHATA、Shunzo FUATSU
DOI:10.1248/cpb.39.2433
日期:——
7-[2-(2-Aminothiazol-4-yl)-2(Z)-methoxyiminoacetamido]-3(Z)-(4-methylthiazol-5-yl)vinyl-3-cephem-4-carboxylic acid (11, ME1206) and its 3-trans isomer (13) were prepared to test antibacterial activity. These compounds exhibited excellent antibacterial activity against both gram-positive and gram-negative bacteria, including β-lactamase producing strains. The pivaloyloxymethyl esters (12 and 14) of the compounds (11 and 13) were prepared by esterification with pivaloyloxymethyl iodide. Among them, pivaloyloxymethyl 7-[(Z)-2-(2-aminothiazol-4-yl)-2-methoxyiminoacetamido]-3(Z)-(4-methylthiazol-5-yl)vinyl-3-cephem-4-carboxylate (12, ME1207) showed good urinary recovery after oral administration in mice.
7-[2-(2-氨基噻唑-4-基)-2(Z)-甲氧亚胺乙酰氨基]-3(Z)-(4-甲基噻唑-5-基)乙烯-3-头孢烯-4-羧酸(11,ME1206)及其3-trans异构体(13)被制备用于测试抗菌活性。这些化合物对革兰氏阳性菌和革兰氏阴性菌均表现出优秀的抗菌活性,包括 β-内酰胺酶产生菌株。通过与酰基碘代匹伐酸酯酯化反应,制备了这些化合物(11和13)的匹伐酸氧甲基酯(12和14)。其中,匹伐酸氧甲基 7-[(Z)-2-(2-氨基噻唑-4-基)-2-甲氧亚胺乙酰氨基]-3(Z)-(4-甲基噻唑-5-基)乙烯-3-头孢烯-4-羧酸酯(12,ME1207)在小鼠口服给药后显示出良好的尿液回收率。