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1.
公开(公告)号:US5981770A
公开(公告)日:1999-11-09
申请号:US924840
申请日:1997-09-05
申请人: Michael T. Flavin , Ze-Qi Xu , Albert Khilevich , David Zembower , John D. Rizzo , Shuyuan Liao , Aye Mar , Lin Lin , Vilayphone Vilaychack , Darko Brankovic , Sergey Dzekhster , Jinjun Liu
发明人: Michael T. Flavin , Ze-Qi Xu , Albert Khilevich , David Zembower , John D. Rizzo , Shuyuan Liao , Aye Mar , Lin Lin , Vilayphone Vilaychack , Darko Brankovic , Sergey Dzekhster , Jinjun Liu
IPC分类号: A61K45/06 , C07D311/16 , C07D493/04 , C07D493/14 , C07D493/00
CPC分类号: C07D493/04 , A61K45/06 , C07D311/16 , C07D493/14
摘要: A method of preparing (+)-calanolide A, 1, a potent HIV reverse transcriptase inhibitor, from chromene 4 is provided. According to the disclosed method, chromene 4 intermediate was subjected to a chlorotitanium-mediated aldol reaction with acetaldehyde to selectively produce (.+-.)-8a. Separation and enzyme-mediated resolution of (.+-.)-8a produced (+)-8a. Cyclization of (+)-8a under neutral Mitsunobu conditions followed by Luche reduction of (+)-7 produced (+)-calanolide A in high yield and enantiomeric purity. The method of the invention has been extended to produce potent antiviral calanolide A analogues.
摘要翻译: 提供了从色烯4制备(+) - 丙内酰脲A,1,一种有效的HIV逆转录酶抑制剂的方法。 根据所公开的方法,将色烯4中间体与乙醛进行氯代钛介导的醛醇缩合反应以选择性地产生(+/-) - 8a。 (+) - 8a的(+/-) - 8a的分离和酶介导的分辨率。 (+) - 8a在中性Mitsunobu条件下循环,然后以高产率和对映异构体纯度,(+) - 7产生(+) - 卡立拉内酯A的Luche还原。 已经扩展了本发明的方法,以产生强效的抗病毒性甘露糖苷A类似物。
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公开(公告)号:US5977385A
公开(公告)日:1999-11-02
申请号:US115984
申请日:1998-07-15
申请人: Michael T. Flavin , Ze-Qi Xu , Albert Khilevich , David Zembower , John D. Rizzo , Shuyuan Liao , Aye Mar , Lin Lin , Vilayphone Vilaychack , Darko Brankovic , Sergey Dzekhster , Jinjun Liu
发明人: Michael T. Flavin , Ze-Qi Xu , Albert Khilevich , David Zembower , John D. Rizzo , Shuyuan Liao , Aye Mar , Lin Lin , Vilayphone Vilaychack , Darko Brankovic , Sergey Dzekhster , Jinjun Liu
IPC分类号: A61K45/06 , C07D311/16 , C07D493/04 , C07D493/14 , C07D493/00
CPC分类号: C07D493/04 , A61K45/06 , C07D311/16 , C07D493/14
摘要: A method of preparing (+)-calanolide A, 1, a potent HIV reverse transcriptase inhibitor, from chromene 4 is provided. According to the disclosed method, chromene 4 intermediate was subjected to a chlorotitanium-mediated aldol reaction with acetaldehyde to selectively produce (.+-.)-8a. Separation and enzyme-mediated resolution of (.+-.)-8a produced (+)-8a. Cyclization of (+)-8a under neutral Mitsunobu conditions followed by Luche reduction of (+)-7 produced (+)-calanolide A in high yield and enantiomeric purity. The method of the invention has been extended to produce potent antiviral calanolide A analogues.
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公开(公告)号:US5872264A
公开(公告)日:1999-02-16
申请号:US924803
申请日:1997-09-05
申请人: Michael T. Flavin , Ze-Qi Xu , Albert Khilevich , David Zembower , John D. Rizzo , Shuyuan Liao , Aye Mar , Lin Lin , Vilayphone Vilaychack , Darko Brankovic , Sergey Dzekhster , Jinjun Liu
发明人: Michael T. Flavin , Ze-Qi Xu , Albert Khilevich , David Zembower , John D. Rizzo , Shuyuan Liao , Aye Mar , Lin Lin , Vilayphone Vilaychack , Darko Brankovic , Sergey Dzekhster , Jinjun Liu
IPC分类号: A61K45/06 , C07D311/16 , C07D493/04 , C07D493/14 , C07D493/22
CPC分类号: C07D493/04 , A61K45/06 , C07D311/16 , C07D493/14
摘要: A method of preparing (+)-calanolide A, 1, a potent HIV reverse transcriptase inhibitor, from chromene 4 is provided. According to the disclosed method, chromene 4 intermediate was subjected to a chlorotitanium-mediated aldol reaction with acetaldehyde to selectively produce (.+-.)-8a. Separation and enzyme-mediated resolution of (.+-.)-8a produced (+)-8a. Cyclization of (+)-8a under neutral Mitsunobu conditions followed by Luche reduction of (.+-.)-7 produced (+)-calanolide A in high yield and enantiomeric purity. The method of the invention has been extended to produce potent antiviral calanolide A analogues.
摘要翻译: 提供了从色烯4制备(+) - 丙内酰脲A,1,一种有效的HIV逆转录酶抑制剂的方法。 根据所公开的方法,将色烯4中间体与乙醛进行氯代钛介导的醛醇缩合反应以选择性地产生(+/-) - 8a。 (+) - 8a的(+/-) - 8a的分离和酶介导的分辨率。 在中性Mitsunobu条件下环化(+) - 8a,然后以高产率和对映体纯度,(+/-) - 7产生(+) - 卡立拉内酯A的Luche还原。 已经扩展了本发明的方法,以产生强效的抗病毒性甘露糖苷A类似物。
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4.
公开(公告)号:US5892060A
公开(公告)日:1999-04-06
申请号:US609537
申请日:1996-03-01
申请人: Michael T. Flavin , Ze-Qi Xu , Albert Khilevich , David Zembower , John D. Rizzo , Shuyuan Liao , Aye Mar , Lin Lin , Vilayphone Vilaychak , Darko Brankovic , Sergey Dzekhster , Jinjun Liu
发明人: Michael T. Flavin , Ze-Qi Xu , Albert Khilevich , David Zembower , John D. Rizzo , Shuyuan Liao , Aye Mar , Lin Lin , Vilayphone Vilaychak , Darko Brankovic , Sergey Dzekhster , Jinjun Liu
IPC分类号: A61K45/06 , C07D311/16 , C07D493/04 , C07D493/14 , C07D407/14
CPC分类号: C07D493/04 , A61K45/06 , C07D311/16 , C07D493/14
摘要: A method of preparing (+)-calanolide A, 1, a potent HIV reverse transcriptase inhibitor, from chromene 4 is provided. According to the disclosed method, chromene 4 intermediate was subjected to a chlorotitanium-mediated aldol reaction with acetaldehyde to selectively produce (.+-.)-8a. Separation and enzyme-mediated resolution of (.+-.)-8a produced (+)-8a. Cyclization of (+)-8a under neutral Mitsunobu conditions followed by Luche reduction of (+)-7 produced (+)-calanolide A in high yield and enantiomeric purity. The method of the invention has been extended to produce potent antiviral calanolide A analogues.
摘要翻译: 提供了从色烯4制备(+) - 丙内酰脲A,1,一种有效的HIV逆转录酶抑制剂的方法。 根据所公开的方法,将色烯4中间体与乙醛进行氯代钛介导的醛醇缩合反应以选择性地产生(+/-) - 8a。 (+) - 8a的(+/-) - 8a的分离和酶介导的分辨率。 (+) - 8a在中性Mitsunobu条件下循环,然后以高产率和对映异构体纯度,(+) - 7产生(+) - 卡立拉内酯A的Luche还原。 已经扩展了本发明的方法,以产生强效的抗病毒性甘露糖苷A类似物。
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