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Two New Lactones and One New Aryl-8-oxa-bicyclo[3,2,1]oct-3-en-2-one from Descurainia sophia.

✍ Scribed by Kai Sun; Xian Li; Wen Li; Jinhui Wang; Jianming Liu; Yi Sha


Publisher
John Wiley and Sons
Year
2005
Weight
13 KB
Volume
36
Category
Article
ISSN
0931-7597

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✦ Synopsis


Abstract

For Abstract see ChemInform Abstract in Full Text.


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## Abstract Trichloro‐substituted 8‐oxabicyclo[3.2.1]oct‐6‐en‐3‐ones **6** and **7** are solvolysed by methanolic sodium methoxide to form the bicyclo[3.2.1] Ξ±,α‐dimethoxy ketones **13** and **14**, with preservation of one chloro substituent. In the case of **6a**, prolonged reaction time with an