Process for the preparation of 14-hydroxymorphinan derivatives
申请人:Bristol-Myers Company
公开号:US04017497A1
公开(公告)日:1977-04-12
N-substituted-14-hydroxy-3-substituted-morphinan derivatives have been found to possess potent narcotic agonist or antagonist activity. In particular, the compound 3,14-dihydroxy-N-cyclobutylmethylmorphinan has been found to possess potent agonist/antagonist activity. A new and novel total synthesis for the preparation of these compounds is described herein.
N-dealkylation of N-alkyl-14-hydroxymorphinans and derivatives thereof
申请人:Research Corporation
公开号:US04141897A1
公开(公告)日:1979-02-27
There is provided a novel, high yield, method of dealkylating N-alkylated 14-hydroxymorphinans and derivatives thereof including, inter alia, oxymorphone and oycodone. There are thus provided, inter alia, more efficient routes for the formation of naloxone, naltrexone, and nalbuphine. In the principal step of the process, the dealkylation using certain oxycarbonyl halides (or haloformates) is carried out on the N-alkyl-14-acyloxy-morphinan which it is desired to dealkylate.