摘要:
The present invention provides processes for the stereoselective synthesis of 6-alpha-amino morphinans. In particular, the invention provides processes for the reductive amination of 6-keto normorphinans by catalytic transfer hydrogenation.
摘要:
The present invention is directed to processes for the synthesis of morphinans. In particular, a process for the asymmetric reduction of an imine moiety in a 3,4-dihydroisoquinoline to produce a tetrahydroisoquinoline, followed by a Birch reduction to produce a hexahydroisoquinoline. In various embodiments, the 3,4-dihydroisoquinoline contains a phenol moiety protected with a labile protecting group. In other embodiments, the imine reduction reaction mixture contains silver tetrafluoroborate.
摘要:
The present invention provides an efficient process for the preparation of hexahydroisoquinolines from amides. In particular, the invention provides a good yielding, one-pot process for the synthesis of hexahydroisoquinolines.
摘要:
The present invention provides processes for the stereoselective synthesis of 6-alpha-amino N-substituted morphinans. In particular, the invention provides processes for the reductive amination of 6-keto N-substituted morphinans by catalytic hydrogen transfer.
摘要:
The present invention provides (+)-morphinanium N-oxide compounds or pharmaceutically acceptable salts thereof. The invention also provides processes for producing (+)-morphinanium N-oxides or pharmaceutically acceptable salts thereof from the corresponding tertiary N-substituted (+)-morphinan compound or pharmaceutically acceptable salt thereof.
摘要:
The present invention provides (+)-morphinanium quaternary salts. The invention also provides processes for producing (+)-morphinanium quaternary salts from tertiary N-substituted (+)-morphinan compounds.
摘要:
The present invention provides compositions of 6-amino morphinan compounds and process for their synthesis. In particular, the processes provide for the reductive amination of 6-keto morphinans by catalytic transfer hydrogenation, to produce 6-amino morphinan compounds, which are epimerically and/or diastereomerically enriched.
摘要:
The present invention provides (+)-morphinanium N-oxide compounds or pharmaceutically acceptable salts thereof. The invention also provides processes for producing (+)-morphinanium N-oxides or pharmaceutically acceptable salts thereof from the corresponding tertiary N-substituted (+)-morphinan compound or pharmaceutically acceptable salt thereof.
摘要:
The present invention provides (+)-morphinanium compounds comprising substituted 6-hydroxy or 6-amine groups. The invention also provides methods for inhibiting microglial activation by administering the compounds of the invention.