专利号:US-6723853-B2 优先权日:2001-08-27 标 题 :Intermediates and methods of preparation of intermediates in the enantiomeric synthesis of (20R)homocamptothecins and the enantiomeric synthesis of (20R)homocamptothecins 发明人:CURRAN DENNIS P; GABARDA ANA E 权利人:UNIV PITTSBURGH 摘要:A method of synthesizing a compound having the formula: n from a compound having the formula: n wherein R 1 is hydrogen, fluorine, chlorine or SiR 5 R 6 R 7 , wherein R 5 , R 6 , and R 7 are independently the same or different an alkyl group or an aryl group, R 2 is an alkyl group, R 3 is a protecting group, R 4 is an alkyl group, an allyl group, a propargyl group —CO 2 H, or a benzyl group, R 8 is —CO 2 R 10 , wherein R 10 is an alkyl group or an aryl group, X 1 is OH and X 2 is H, includes the step of exposing compound (III) to at least one of an organic acid or an inorganic acid. A compound has the general formula (III).
专利号:US-2003073840-A1 优先权日:2001-08-27 标 题 :Intermediates and methods of preparation of intermediates in the enantiomeric synthesis of (20R)homocamptothecins and the enantiomeric synthesis of (20R)homocamptothecins
专利号:WO-03018559-A2 优先权日:2001-08-27 标 题 :Intermediates and preparation thereof for the enantioselective synthesis of (20r) homocamptothecins
专利号:RU-2037481-C1 优先权日:1989-10-27 标 题:Derivatives of substituted benzoylbenzene-, biphenyl or 2-oxazolealkanoic acid or their pharmacologically acceptable salts, and a method of their synthesis
专利号:US-5919797-A 优先权日:1996-04-24 标题:Halogenated naphthyl methoxy piperidines for mapping serotonin transporter sites 发明人:GOODMAN MARK M; FARAJ BAHJAT 权利人:UNIV EMORY 摘要:Halogenated naphthyl methoxy piperidines having a strong affinity for the serotonin transporter are disclosed. Those compounds can be labeled with positron-emitting and/or gamma emitting halogen isotopes by a late step synthesis that maximizes the useable lifeterm of the label. The labeled compounds are useful for localizing serotonin transporter sites by positron emission tomography and/or single photon emission computed tomography.