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Studies on pyrimidine derivatives and related compounds. LI. Reaction of thiamine with amines

✍ Scribed by Akira Takamizawa; Kentaro Hirai; Yoshio Hamashima

Publisher
Elsevier Science
Year
1967
Tongue
French
Weight
162 KB
Volume
8
Category
Article
ISSN
0040-4039

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Thiamine (8,) pyrophosphah ir recagnlzed as co-carboxylase, Bi monophosphate and Bt triphosphate are also well known. However, nothing has yet been reparted on the 81 phosphorous derivatives substituted at other positions of the hydroxyethyl group. In the preceding papers, the authors reported that

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In relation to the mechanism of thiamine action, the chemical reactivity of C-2 carbon atom of the thiazolium portion of thiamine molecule has recently attmcted considerable attentions (1). Previously, the authors reported on the reaction of thiamine with aldehydes involving anomolous C-acylation at

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## Abstract The reaction between arylglyoxals (1), cyclohexyl isocyanide, and aromatic carboxylic acids (2) affords __N__‐cyclohexyl‐2‐acyloxy‐3‐aryl‐3‐oxopropionic amides (3) which can be cyclized to __N__‐cyclohexyl‐2,4‐diaryl‐5‐oxazolecarboxamides (4).