Reaction of cytisine with alka-1,3- and -2,3-dien-2-ylphosphonates

Methods have been developed for functionalizing the alkaloid cytisine via introduction of alka-1,3- and -2,3-dien-2-ylphosphonate fragments. The main pathway of the reaction of cytisine with 2-(diethoxyphosphoryl) alka-2,3-dien-1-yl methanesulfonates is nucleophilic substitution of the methanesulfon...

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Bibliographic Details
Published inRussian journal of organic chemistry Vol. 52; no. 12; pp. 1804 - 1811
Main Author Brel, V. K.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.12.2016
Springer Nature
Springer Nature B.V
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Summary:Methods have been developed for functionalizing the alkaloid cytisine via introduction of alka-1,3- and -2,3-dien-2-ylphosphonate fragments. The main pathway of the reaction of cytisine with 2-(diethoxyphosphoryl) alka-2,3-dien-1-yl methanesulfonates is nucleophilic substitution of the methanesulfonyloxy group with retention of the alkadiene skeleton. A minor reaction pathway is nucleophilic substitution with formation of alka-1,3-dien-2-ylphosphonates. Cytisine conjugates with exclusively alka-1,3-dien-2-ylphosphonate fragment have been synthesized by copper(I)-catalyzed 1,3-dipolar cycloaddition of N -(prop-2-yn-1-yl)cytisine to 3-azidoalka-1,3-dien-2-ylphosphonates.
ISSN:1070-4280
1608-3393
DOI:10.1134/S1070428016120162