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Novel Spiropyrans of the Benzoxazinone Series Containing a Condensed Benzo Ring in the Hetarene Moiety.

✍ Scribed by E. L. Mukhanov; Yu. S. Alekseenko; B. S. Lukyanov; Yu. I. Ryabukhin; O. N. Ryashchin; M. B. Lukyanova


Publisher
John Wiley and Sons
Year
2006
Weight
13 KB
Volume
37
Category
Article
ISSN
0931-7597

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## Abstract The synthesis of a novel ring‐expanded nucleoside analogue, (Z)‐1‐((2‐Guanidinocarbamoyl‐cyclopropylidene)methyl)‐4,5,7,8‐tetrahydro‐6__H__‐6‐iminoimidazo[4,5‐__e__][1,3]diazepine‐4,8‐dione (**1**) has been reported. It was prepared starting from methyl imidazole‐4,5‐dicarboxylate by se