The one-pot N-demethylation and acid-catalyzedrearrangement of morphinan-N-oxides offers a new, shorter and more efficient route to neuropharmacologically important N-substituted aporphines. An improved procedure is described for the preparation of the starting alkaloid N-oxides using Na2WO4 as catalyst. The transetherification during the rearrangement of codeinone into 2-O-alkyl-norapocodeines is
一锅N-去甲基化和吗啡喃-N-氧化物的酸催化重排提供了一条新的,更短且更有效的途径来获得神经药理学上重要的N-取代的紫杉醇。描述了使用Na 2 WO 4作为催化剂制备起始生物碱N-氧化物的改进方法。记录了可待因酮重排成2 - O-烷基-诺拉普可待因期间的酯交换作用。
Compositions and Methods For Making Alkaloid Morphinans
申请人:EPIMERON INC.
公开号:US20170267686A1
公开(公告)日:2017-09-21
Methods that may be used for the manufacture of a class of chemical compounds known as morphinans, including neopine, are provided. Compositions useful for the synthesis of morphinans, including neopine, are also provided.
Microspheres are produced by contacting a solution of a macromolecule or small molecule in a solvent with an antisolvent and a counterion, and chilling the solution. The microspheres are useful for preparing pharmaceuticals, nutraceuticals, cosmetic products and the like of defined dimensions.
Nitrate prodrugs able to release nitric oxide in a controlled and selective way and their use for prevention and treatment of inflammatory, ischemic and proliferative diseases
申请人:Scaramuzzino, Giovanni
公开号:EP1336602A1
公开(公告)日:2003-08-20
New pharmaceutical compounds of general formula (I): F-(X)q where q is an integer from 1 to 5, preferably 1; -F is chosen among drugs described in the text, -X is chosen among 4 groups -M, -T, -V and -Y as described in the text.
The compounds of general formula (I) are nitrate prodrugs which can release nitric oxide in vivo in a controlled and selective way and without hypotensive side effects and for this reason they are useful for the preparation of medicines for prevention and treatment of inflammatory, ischemic, degenerative and proliferative diseases of musculoskeletal, tegumental, respiratory, gastrointestinal, genito-urinary and central nervous systems.
Compositions and methods to effect the release profile in the transdermal administration of active agents
申请人:——
公开号:US20020004065A1
公开(公告)日:2002-01-10
Compositions and methods for the transdermal delivery of active agents up to a period of seven days or more at substantially a zero-order release rate comprising a pharmaceutically acceptable adhesive matrix and a polymeric plastic material that provides a release rate regulating effect on the active agents.