cas 14357-76-7, Dihydroetorphine | Articles data

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IMPROVED METHOD OF MANUFACTURING BUPRENORPHINE AND ANALOGUES THEREOF FROM ORIPAVINE
The invention relates to an improved method of preparing buprenorphine, a salt thereof, analogues of buprenorphine and their salts. In particular, the invention relates to a method of preparing buprenorphine and related products and salts in economic and ecologic ways having increased yields.
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Page/Page column 27

(2016/06/15)

A facile synthesis and structural verification of etorphine and dihydroetorphine from codeine
In this study, an improved process for the synthesis of etorphine and dihydroetorphine from codeine with an overall yield of 2.7% and 1.5% respectively is described. The structure of 19-propylthevinol 7 was verfied by X-ray structure analysis. This result is promising for synthesizing various morphine-based drugs.
Huang, Xin-Ren,Srimurugan, Sankareswaran,Lee, Gene-Hsiang,Chena, Chinpiao
experimental part
p. 101 - 107
(2011/11/28)