ISSN:
1434-4475
Keywords:
Intramolecular cyclocondensation
;
[1,3]-Thiazino-[2,3-f]-purines
;
7,8-Disubstituted purine-2,6-diones
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Zusammenfassung 7-Cyanomethyl-8-ethoxycarbonylmethylthio- (3a), 7-Cyanomethyl-8-cyanomethylthio- (3b) und 7-Ethoxycarbonylmethyl-8-ethoxycarbonylmethylthio-1,3-dimethyl-3,7-dihydro-1H-purin-2,6-dion (3c) liefern bei einer intramolekularen Claisen-Kondensation die 7-Amino-8-ethoxy-carbonyl-(5), 7-Amino-8-cyano- (6), und 8-Ethoxycarbonyl-7-hydroxy-1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydro-6H-[1,3]-thiazino-[2,3-f]-purine (7).
Notes:
Summary 7-Cyanomethyl-8-ethoxycarbonylmethylthio- (3a), 7-cyanomethyl-8-cyanomethylthio- (3b) and 7-ethoxycarbonylmethyl-8-ethoxycarbonylmethylthio-1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dione (3c) afforded 7-amino-8-ethyoxycarbonyl-(5), 7-amino-8-cyano- (6), and 8-ethoxycarbonyl-7-hydroxy-1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydro-6H-[1,3]-thiazino-[2,3-f]-purine (7), respectively, on intramolecular Claisen-type condensation.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00810022
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