Methods for making thebaine and an acid salt of thebaine are disclosed herein. In one embodiment, an acid salt of thebaine is made from codeinone or an acid salt of one or more of the following: 8-methoxy-Δ
6
-dihydrothebaine, codeinone dimethyl ketal, and neopinone dimethyl ketal.
A method of preparation of Oxycodone of formula I by reacting thebaine of formula II, or its analogue of formula III, wherein R represents a C
2
to C
5
alkyl, an alkylaryl, preferably benzyl, methoxybenzyl, or allyl, with hydrogen peroxide or peroxoacids in the presence of oxalic acid in admixture with acetic or formic acid. From the resulting crystalline precipitate of 14-hydroxycodeinone oxalate, by addition of a base, 14-hydroxycodeinone of formula IV is released, which is hydrogenated with hydrogen in the presence of a catalyst to yield Oxycodone (I): Oxycodone is transformed to hydrochloride, which is used as the active ingredient in analgesic formulations.
TRANSITION METAL-CATALYZED PROCESSES FOR THE PREPARATION OF N-ALLYL COMPOUNDS AND USE THEREOF
申请人:Rhodes Technologies
公开号:US20130102780A1
公开(公告)日:2013-04-25
The present disclosure provides processes for the N-dealkylation of tertiary amines and the use of transition metal catalysts to prepare tertiary N-allyl amine derivatives and secondary amine derivatives thereof. The tertiary amines can be alkaloids and, more particularly, the tertiary amines can be opioids. In specific embodiments, the present disclosure provides methods for use in processes for the synthesis of naloxone and naltrexone from oripavine.
[EN] INTERMEDIATE, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF<br/>[FR] INTERMÉDIAIRE, SON PROCÉDÉ DE PRÉPARATION ET SON UTILISATION<br/>[ZH] 一种中间体及其制备方法和应用
Synthesis and biological activity of 8β-substituted hydrocodone indole and hydromorphone indole derivatives
作者:Han Yu、Thomas Prisinzano、Christina M. Dersch、Jamila Marcus、Richard B. Rothman、Arthur E. Jacobson、Kenner C. Rice
DOI:10.1016/s0960-894x(01)00689-8
日期:2002.1
The 8beta-unsubstituted and substituted analogues of hydrocodone indole and hydromorphone indole were synthesized and their binding affinities to opioid receptors were determined. Introduction of an 8beta-methyl group into the indolomorphinan nucleus increased affinity at all opioid receptors. 6,7-Dehydro-4,5alpha-epoxy-8beta-methyl-6,7,2',3'-indolomorphinan (9) was found to be a delta antagonist with subnanomolar affinity (0,7 nM) for the delta-opioid receptor, and to have good delta-selectivity (mu/delta = 322). Published by Elsevier Science Ltd.