摘要:
The present invention provides processes for preparing nal-opiates without the isolation of intermediates. In general, the process provides for alkylation and reduction in the same pot to give the nal-opi- ate (I).
摘要:
The invention provides a process for the N-alkylation of normorphinan compounds to produce N-alkylated morphinan compounds. In particular, the process relates to the alkylation of a normorphinan compound by a carboxaldehyde in the presence of a reducing agent to form an N-alkylated morphinan.
摘要:
An improved method for the preparation of oxymorphone from oripavine is provided. Oripavine is oxidized to form 14-hydroxymorphinone after which the oxidation reaction is quenched to prevent the formation of 1-1′-dimer side products. The 14-hydroxymorphinone is then reduced, typically by catalytic hydrogenation to form oxymorphone. The inventive method disclosed is further applicable to the production of morphinan derivatives.
摘要:
This invention relates to stereoselective synthesis of R-MNTX and intermediates thereof, pharmaceutical preparations comprising R-MNTX or intermediates thereof and methods for their use.