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公开(公告)号:US20080306256A1
公开(公告)日:2008-12-11
申请号:US11631595
申请日:2005-07-04
申请人: Udayampalayam P. Senthilkumar , Venu S. Lakshmipathi , Gnanaprakasam Andrew , Ramasubbu Chandrasekaran , Dindigala Nagender Rao , Gaddam Om Reddy
发明人: Udayampalayam P. Senthilkumar , Venu S. Lakshmipathi , Gnanaprakasam Andrew , Ramasubbu Chandrasekaran , Dindigala Nagender Rao , Gaddam Om Reddy
IPC分类号: C07D501/60
CPC分类号: C07D501/00
摘要: The present invention relates to an improved process for the preparation of cephalosporin antibiotics of formula (I). The present invention also provides new salts of compound of formula (II) and a process for the preparation of these new salts, where n=0.5 to 2. The present invention also provides a process for the preparation of compound of formula (I) using the new salts of formula (II).
摘要翻译: 本发明涉及制备式(I)的头孢菌素抗生素的改进方法。 本发明还提供了式(II)化合物的新盐和制备这些新盐的方法,其中n = 0.5至2.本发明还提供了一种制备式(I)化合物的方法,其使用 式(II)的新盐。
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公开(公告)号:US07361761B2
公开(公告)日:2008-04-22
申请号:US11522908
申请日:2006-09-19
IPC分类号: C07D471/04 , C07D233/58 , C07F9/28
CPC分类号: C07F9/3873 , C07F9/58 , C07F9/6506 , C07F9/65068
摘要: The present invention is to relate an improved process using anisole as solvent for the preparation of compound of formula (I) and its pharmaceutically acceptable salts thereof. wherein R represents —NR1R2, or a group n=1, 2, 3, 4 and 5, where R1 and R2 may be same or different and independently represents hydrogen, or C1-6 alkyl.
摘要翻译: 本发明涉及使用苯甲醚作为制备式(I)化合物及其药学上可接受的盐的溶剂的改进方法。 其中R表示-NR 1 R 2 2或基团n = 1,2,3,4和5,其中R 1和R 2 可以相同或不同,并且独立地表示氢或C 1-6烷基。
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