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Pteridines, LXXXVI1: Structure and Synthesis of Leucettidine

✍ Scribed by Wolfgang Pfleiderer

Book ID
104203609
Publisher
Elsevier Science
Year
1988
Tongue
French
Weight
482 KB
Volume
44
Category
Article
ISSN
0040-4020

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✦ Synopsis

Abstrdct -The structure of leucettidine (111, a new naturally occurring pteridinr deri- vative tn Lwettr microraphis, has been revised to 6-(I-hydroxypropylj-Gnwthyllurtine. Unrrkiguous syntheses of !J rnd its 3-methyl isoaer 1 can also be depicted frux comparisons of pKa values, b prove the correct str%cton, tiich V-and N)(R-drta. w. -P I1 and finally By methylation with methyl iodide in dilute sodium hydrogrncarbonatc to glve z and 4 in good yields.

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## Abstract The nonenzymatic synthesis of aurodrosopterin (5) from 6‐acetyl‐2‐amino‐3, 7, 8, 9‐tetrahydro‐4__H__‐pyrimido‐[4,5‐__b__][1,4]diazepin‐4‐one (3) and 7,8‐dihydrolumazine (4) at pH 3 (HCl) was performed. The identity of the synthesized compound with the natural eye pigment isolated from d