Studies on the Pyrimidine Derivatives and Related Compounds. XXXV. On the Reaction Product of Thiamine with Diethyl Benzoylphosphonate
作者:Akira Takamizawa、Yoshiro Sato、Sachiko Tanaka、Hisako Itoh
DOI:10.1248/cpb.14.407
日期:——
It was shown that a new thiamine derivative which was obtained from the reaction of the neutral form of thiamine (I) with diethyl benzoylphosphonate (II) should be formulated as 2-phenyl-3-oxo-4-(2-methyl-4-amino-5-pyrimidyl) methyl-5-methyl-6-(2-benzoyloxy) ethyl-2, 3-dihydro-4H-1, 4-thiazine (IV). A novel benzoylation reaction accompanied by the rearrangement from thiazole to 1, 4-thiazine is also described.
研究表明,通过硫胺素中性形式(I)与二乙基苯甲酰基磷酸酯(II)反应获得的新硫胺素衍生物应表示为2-苯基-3-氧-4-(2-甲基-4-氨基-5-嘧啶基)甲基-5-甲基-6-(2-苯甲酰氧基)乙基-2,3-二氢-4H-1,4-噻嗪(IV)。同时描述了一种新的苯甲酰化反应,伴随噻唑环到1,4-噻嗪环的重排。