Method for the preparation of chromanone 7
    3.
    发明授权
    Method for the preparation of chromanone 7 失效
    色酮的制备方法7

    公开(公告)号:US5847164A

    公开(公告)日:1998-12-08

    申请号:US925706

    申请日:1997-09-09

    摘要: A method of preparing (.+-.)-calanolide A, 1, a potent HIV reverse transcriptase inhibitor, from chromene 4 is provided. Useful intermediates for preparing (.+-.)-calanolide A and its derivatives are also provided. According to the disclosed method, chromene 4 intermediate was reacted with acetaldehyde diethyl acetal or paraldehyde in the presence of an acid catalyst with heating, or a two-step reaction including an aldol reaction with acetaldehyde and cyclization either under acidic conditions or neutral Mitsunobu conditions, to produce chromanone 7. Reduction of chromanone 7 with sodium borohydride, in the presence of cerium trichloride, produced (.+-.)-calanolide A. A method for resolving (.+-.)-calanolide A into its optically active forms by a chiral HPLC system or by enzymatic acylation and hydrolysis is also disclosed. Finally, a method for treating or preventing viral infections using (.+-.)-calanolide A or (-)-calanolide A is provided.

    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。 还提供了制备(+/-) - 丙内酰脲A及其衍生物的有用中间体。 根据所公开的方法,在酸催化剂的存在下,将色烯4中间体与乙醛二乙基缩醛或对甲醛反应,或者在酸性条件或中性Mitsunobu条件下,包括醛醇与乙醛反应和醛化反应的两步反应, 产生苯并二氢吡喃酮7.在三氯化铈的存在下,用硼氢化钠还原色酮7.产生(+/-) - 甘露糖苷A。一种通过手性拆分(+/-) - 卡立拉内酯A至其光学活性形式的方法 还公开了HPLC系统或通过酶酰化和水解。 最后,提供了一种使用(+/-) - 蒎烯内酰胺A或( - ) - cal醇酯A治疗或预防病毒感染的方法。

    Method for the preparation of aldol product 7B
    5.
    发明授权
    Method for the preparation of aldol product 7B 失效
    醛醇产品7B的制备方法

    公开(公告)号:US5840921A

    公开(公告)日:1998-11-24

    申请号:US925992

    申请日:1997-09-09

    摘要: A method of preparing (.+-.)-calanolide A, 1, a potent HIV reverse transcriptase inhibitor, from chromene 4 is provided. Useful intermediates for preparing (+)-calanolide A and its derivatives are also provided. According to the disclosed method, chromene 4 intermediate was reacted with acetaldehyde diethyl acetal or paraldehyde in the presence of an acid catalyst with heating, or a two-step reaction including an aldol reaction with acetaldehyde and cyclization either under acidic conditions or neutral Mitsunobu conditions, to produce chromanone 7. Reduction of chromanone 7 with sodium borohydride, in the presence of cerium trichloride, produced (.+-.)-calanolide A. A method for resolving (.+-.)-calanolide A into its optically active forms by a chiral HPLC system or by enzymatic acylation and hydrolysis is also disclosed. Finally, a method for treating or preventing viral infections using (.+-.)-calanolide A or (-)-calanolide A is provided.

    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。 还提供了制备(+) - 蒎烯内酯A及其衍生物的有用的中间体。 根据所公开的方法,在酸催化剂的存在下,将色烯4中间体与乙醛二乙基缩醛或对甲醛反应,或者在酸性条件或中性Mitsunobu条件下,包括醛醇与乙醛反应和醛化反应的两步反应, 产生苯并二氢吡喃酮7.在三氯化铈的存在下,用硼氢化钠还原色酮7.产生(+/-) - 甘露糖苷A。一种通过手性拆分(+/-) - 卡立拉内酯A至其光学活性形式的方法 还公开了HPLC系统或通过酶酰化和水解。 最后,提供了一种使用(+/-) - 蒎烯内酰胺A或( - ) - cal醇酯A治疗或预防病毒感染的方法。

    Methods for preparing antiviral calanolide compounds
    7.
    发明申请
    Methods for preparing antiviral calanolide compounds 失效
    制备抗病毒胼cal体化合物的方法

    公开(公告)号:US20020013480A1

    公开(公告)日:2002-01-31

    申请号:US09918674

    申请日:2001-07-31

    IPC分类号: C07D493/02

    CPC分类号: C07D493/04 C07D493/14

    摘要: The present invention relates to methods for preparing 2,2-dimethyl-5-acyloxy-10-propyl-2H,8H-benzonull 1,2-b:3,4-b nullnulldipyran-8-one (5) and 2,2-dimethyl-5-hydroxy- 10-propyl-2H,8H-benzonull1,2-b:3,4-b nullnulldipyran-8-one (6) and their use as intermediates for the synthesis of antiviral calanolide compounds. For example, Fries rearrangement on compound 5 or Friedel-Crafts reaction on 6, yields intermediate 2,2-dimethyl-5-hydroxy-6-propionyl-10-propyl-2H,8H-benzonull1,2-b:3,4-bnullnulldipyran-8-one (4), which, in turn, can be converted to (null)-calanolide A and (null)-calanolide B. The coupling of compound 6 with the appropriate chiral molecule under Mitsunobu or nucleophilic displacement leads to the asymmetric synthesis of antiviral calanolide compounds.

    摘要翻译: 本发明涉及制备2,2-二甲基-5-酰氧基-10-丙基-2H,8H-苯并[1,2-b:3,4-b']二吡喃-8-酮(5)的方法和 2,2-二甲基-5-羟基-10-丙基-2H,8H-苯并[1,2-b:3,4-b']二吡喃-8-酮(6)及其作为合成中间体的用途 抗病毒胼cal体化合物。 例如,化合物5上的Fries重排或6上的Friedel-Crafts反应产生中间体2,2-二甲基-5-羟基-6-丙酰基-10-丙基-2H,8H-苯并[1,2-b:3, 4-b']二吡喃-8-酮(4),其反过来可以转化为(+) - 卡立拉内酯A和( - ) - 甘露糖苷B.在Mitsunobu或化合物6与化合物6与适当的手性分子的偶联 亲核取代导致抗病毒胼cal体化合物的不对称合成。

    Calanolide analogues and methods of their use
    8.
    发明申请
    Calanolide analogues and methods of their use 审中-公开
    Calanolide类似物及其使用方法

    公开(公告)号:US20020013478A1

    公开(公告)日:2002-01-31

    申请号:US09814074

    申请日:2001-03-21

    IPC分类号: C07D311/78

    摘要: Calanolide analogues that demonstrate potent antiviral activity against many viruses are provided. Also provided is a method of using calanolide analogues for treating or preventing viral infections. The calanolide analogues provided are obtained via syntheses employing chromene 4 and chromanone 7 as key intermediates.

    摘要翻译: 提供了表现出针对许多病毒的有效抗病毒活性的卡立奈德类似物。 还提供了使用丙烯酰胆碱类似物治疗或预防病毒感染的方法。 提供的甘露糖苷类似物通过使用色烯4和苯并二氢吡喃酮7作为关键中间体的合成获得。

    Method and composition for treating and preventing mycobacterium infections
    9.
    发明申请
    Method and composition for treating and preventing mycobacterium infections 审中-公开
    用于治疗和预防分枝杆菌感染的方法和组合物

    公开(公告)号:US20010027209A1

    公开(公告)日:2001-10-04

    申请号:US09735067

    申请日:2000-12-11

    IPC分类号: A61K031/366 A61K031/655

    摘要: Calanolides and analogues thereof that demonstrate potent mycobacterium activity are provided. Also provided is a method of using calanolides and analogues thereof for treating or preventing mycobacterium infections. The calanolides and analogues thereof provided are obtained via syntheses employing chromene 4 and chromanone 7 as key intermediates.

    摘要翻译: 提供了表现出有效的分枝杆菌活性的卡立仑内酯及其类似物。 还提供了用于治疗或预防分枝杆菌感染的calanolide及其类似物的方法。 所提供的癸内酰胺及其类似物通过使用色烯4和苯并二氢吡喃酮7作为关键中间体的合成获得。

    Scalable method for the isolation of anti-HIV agents from the tropical
plant calophyllum
    10.
    发明授权
    Scalable method for the isolation of anti-HIV agents from the tropical plant calophyllum 失效
    用于从热带植物calophyllum分离抗HIV药物的可扩展方法

    公开(公告)号:US6160131A

    公开(公告)日:2000-12-12

    申请号:US213192

    申请日:1998-12-17

    CPC分类号: C07D493/14

    摘要: An efficient and scalable method is reported for the isolation of costatolide (2), an HIV-1-specific nonnucleoside reverse transcriptase inhibitor (NNRTI), from the latex of Calophyllum plants such as C. teysmannii var. inophylloide. An overall yield of 10.6% of costatolide, with a purity of 96%, was obtained by repetitive recrystallization of the latex from a single organic solvent after the oily material was removed by treatment with hexane. A second major component of the latex, soulattrolide (3), another HIV-1 NNRTI, was also isolated. Both compounds were characterized by spectroscopic and chromatographic analyses and their in vitro anti-HIV activities were also confirmed. The results suggest that sufficient supplies of costatolide can be obtained in a relatively low-cost manner from natural sources.

    摘要翻译: 报道了从Calphyllum植物如C.teysmannii变种的胶乳中分离Costatolide(2)(一种HIV-1特异性非核苷逆转录酶抑制剂(NNRTI))的有效和可扩展的方法。 叶黄素 通过用己烷处理除去油状物后,通过从单一有机溶剂中的胶乳的重复重结晶,可以获得纯度为96%的花色滑石的总产率10.6%。 还分离了乳胶的另一个主要组分,即另外的HIV-1 NNRTI的soulattrolide(3)。 通过光谱和色谱分析表征了两种化合物,并证实了其体外抗HIV活性。 结果表明,可以以相对低成本的方式从天然来源获得足够的costatolide供应。