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公开(公告)号:US11958798B2
公开(公告)日:2024-04-16
申请号:US17973129
申请日:2022-10-25
发明人: Imre Rozsumberszki , Zsuzsanna Kardos , Irén Hortobágyi , Tibor Szabó , Csaba Váradi , Tamás Bán
IPC分类号: C07C51/09 , C07C67/31 , C07C59/46 , C07C69/608
CPC分类号: C07C51/09 , C07C67/31 , C07B2200/13 , C07C59/46 , C07C69/608 , C07C2602/22
摘要: The present invention relates to a process for the preparation of iloprost of formula I through new intermediates, isolation of iloprost of formula I in solid form, as well as preparation of the 16(S)-iloprost and 16(R)-iloprost isomers of formulae (S)-I and (R)-I and isolation of iloprost of formula I and 16(S)-iloprost of formula (S)-I in solid, crystalline form.
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公开(公告)号:US11535580B2
公开(公告)日:2022-12-27
申请号:US17048053
申请日:2019-04-16
发明人: Imre Rozsumberszki , Zsuzsanna Kardos , Irén Hortobágyi , Tibor Szabó , Csaba Váradi , Tamás Bán
IPC分类号: C07C51/09 , C07C67/31 , C07C59/46 , C07C69/608
摘要: The present invention relates to a process for the preparation of iloprost of formula I through new intermediates, isolation of iloprost of formula I in solid form, as well as preparation of the 16(S)-iloprost and 16(R)-iloprost isomers of formulae (S)-I and (R)-I and isolation of iloprost of formula I and 16(S)-iloprost of formula (S)-I in solid, crystalline form.
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公开(公告)号:US11008594B2
公开(公告)日:2021-05-18
申请号:US16087402
申请日:2017-03-21
发明人: Irén Hortobágyi , István Lászlófi , Zsuzsanna Kardos , József Molnár , László Takács , Tamás Bán
摘要: The invention provides a new enzimatic process for the preparation of chiral carboxylic acids, their salts and acid derivatives of the general formula (I) by enzymatic hydrolysis of racemic carboxylic acid ester of the general formula (II) and optionally subsequent esterification or acylation.
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公开(公告)号:US10421737B2
公开(公告)日:2019-09-24
申请号:US16091019
申请日:2017-03-30
发明人: Irén Hortobágyi , István Lászlófi , Zsuzsanna Kardos , József Molnár , László Takács , Tamás Bán
IPC分类号: C07D307/93
摘要: The invention provides a new process for the preparation of optically active Beraprost of formula (I) starting from racemic Beraprost alkyl ester through hydrolysis, enantiomer esterification, preparation of diacyl-Beraprost ester diastereomers and their separation and hydrolysis.
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