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公开(公告)号:US07385072B2
公开(公告)日:2008-06-10
申请号:US11478552
申请日:2006-06-29
IPC分类号: C07C255/08
CPC分类号: C07C253/30 , C07C255/41
摘要: The invention disclosed in this application relates to an improved process for the preparation of Entacapone. In one embodiment the process involves: (i) reacting a 3-alkoxy-4-hydroxy-5-nitrobenzadehyde with N,N-diethylaminocyanoacetamide in the presence of a mild acid catalyst and a solvent, to provide a 3-O-alkylated Entacapone, and treating the 3-O-alkylated Entacapone with an acid catalyst in the presence of an organic base to provide Entacapone.
摘要翻译: 本申请中公开的发明涉及一种改进的恩他卡朋制备方法。 在一个实施方案中,该方法包括:(i)在温和的酸催化剂和溶剂的存在下使3-烷氧基-4-羟基-5-硝基苯甲酸与N,N-二乙基氨基氰基乙酰胺反应,得到3-O-烷基化的恩他卡朋 ,并在有机碱存在下用酸催化剂处理3-O-烷基化的恩他卡朋,以提供恩他卡朋。
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公开(公告)号:US09951098B2
公开(公告)日:2018-04-24
申请号:US14007955
申请日:2012-03-29
CPC分类号: C07H19/12 , C07H1/00 , C07H1/06 , Y02P20/582
摘要: Provided herein are processes for the preparation of 5-azacytidine, useful for treating, preventing, and/or managing diseases or conditions including cancer, disorders related to abnormal cell proliferation, hematologic disorders, and myelodysplastic syndromes (MDS), wherein 5-azacytidine is represented by the structure:
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公开(公告)号:US07923566B2
公开(公告)日:2011-04-12
申请号:US11990456
申请日:2005-12-21
申请人: Arava Veera Reddy , Siripalli Udaya Bhaskara Rao , Chinnapillai Rajendiran , Venkateswarlu Jasti
发明人: Arava Veera Reddy , Siripalli Udaya Bhaskara Rao , Chinnapillai Rajendiran , Venkateswarlu Jasti
IPC分类号: C07D403/10 , C07D257/00 , C07F5/06
CPC分类号: C07D403/10
摘要: The invention relates to an improved process for the preparation of Losartan. The process comprising reacting 2-n-butyl-4-chloro-5-formyl imidazole with 2-(4-bromomethyl) benzonitrile in the presence of a phase transfer catalyst and an alkali, and reducing the resulting cyano aldehyde to produce a cyano alcohol which is further reacted with sodium azide in N-methyl pyrrolidinone and a salt to produce Losartan.
摘要翻译: 本发明涉及一种制备氯沙坦的改进方法。 该方法包括在相转移催化剂和碱的存在下使2-正丁基-4-氯-5-甲酰基咪唑与2-(4-溴甲基)苄腈反应,并还原所得的氰醛以产生氰基醇 其进一步与叠氮化钠在N-甲基吡咯烷酮和盐中反应以制备氯沙坦。
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公开(公告)号:US07915425B2
公开(公告)日:2011-03-29
申请号:US11991123
申请日:2005-12-21
申请人: Arava Veera Reddy , Siripalli Udaya Bhaskara Rao , Chinnapillai Rajendiran , Venkateswarlu Jasti
发明人: Arava Veera Reddy , Siripalli Udaya Bhaskara Rao , Chinnapillai Rajendiran , Venkateswarlu Jasti
IPC分类号: C07D257/04 , C07D233/68
CPC分类号: C07D403/10
摘要: The invention relates to a improved process for the preparation of Losartan and its potassium salt, which comprises: (i) reacting bromo OTBN with BCFI in the presence of a base and a phase transfer catalyst to produce a cyano aldehyde; reacting the formed cyano aldehyde with sodium azide in the presence of tributyl tin chloride to produce aldehyde tetrazole; reducing the formed aldehyde tetrazole with sodium borohydride to produce Losartan; and, if desired, converting the formed Losartan to its potassium salt by known method.
摘要翻译: 本发明涉及一种制备氯沙坦及其钾盐的改进方法,其包括:(i)在碱和相转移催化剂的存在下使溴OTBN与BCFI反应产生氰醛; 在三丁基氯化锡存在下,使形成的氰基醛与叠氮化钠反应生成醛四唑; 用硼氢化钠还原形成的醛四唑以产生氯沙坦; 如果需要,通过已知的方法将形成的氯沙坦转化成其钾盐。
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公开(公告)号:US20070060767A1
公开(公告)日:2007-03-15
申请号:US11478552
申请日:2006-06-29
IPC分类号: C07C255/29
CPC分类号: C07C253/30 , C07C255/41
摘要: The invention disclosed in this application relates to an improved process for the preparation of Entacapone. In one embodiment the process involves: (i) reacting a 3-alkoxy-4-hydroxy-5-nitrobenzadehyde with N,N-diethylaminocyanoacetamide in the presence of a mild acid catalyst and a solvent, to provide a 3-O-alkylated Entacapone, and treating the 3-O-alkylated Entacapone with an acid catalyst in the presence of an organic base to provide Entacapone.
摘要翻译: 本申请中公开的发明涉及一种改进的恩他卡朋制备方法。 在一个实施方案中,该方法包括:(i)在温和的酸催化剂和溶剂的存在下使3-烷氧基-4-羟基-5-硝基苯甲酸与N,N-二乙基氨基氰基乙酰胺反应,得到3-O-烷基化的恩他卡朋 ,并在有机碱存在下用酸催化剂处理3-O-烷基化的恩他卡朋,以提供恩他卡朋。
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公开(公告)号:US20140128593A1
公开(公告)日:2014-05-08
申请号:US14007955
申请日:2012-03-29
IPC分类号: C07H19/12
CPC分类号: C07H19/12 , C07H1/00 , C07H1/06 , Y02P20/582
摘要: Provided herein are processes for the preparation of 5-azacytidine, useful for treating, preventing, and/or managing diseases or conditions including cancer, disorders related to abnormal cell proliferation, hematologic disorders, and myelodysplastic syndromes (MDS), wherein 5-azacytidine is represented by the structure:
摘要翻译: 本文提供了制备5-氮杂胞苷的方法,其可用于治疗,预防和/或控制包括癌症,与异常细胞增殖相关的疾病,血液病症和骨髓增生异常综合征(MDS)的疾病或病症,其中5-氮杂胞苷是 由结构代表:
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