Radical deoxygenation and dehalogenation of nucleoside derivatives with hypophosphorous acid and dialkyl phosphites
摘要:
Hypophosphorous acid and dialkyl phosphites are effective radical reducing agents for D-thiocarbonyl groups or halides at the sugar part of nucleoside derivatives and give the corresponding hydrocarbons in high yield. (C) 2001 Elsevier Science Ltd. All rights reserved.
An industrially applicable process is provided for producing nucleic acids or derivatives thereof having their sugar-moiety hydroxyl groups or halogen atoms reduced.
According to this process, O-thiocarbonyl derivates of the sugar-moiety hydroxyl groups or derivatives halogenated in the sugar-moiety, are allowed to react, in the presence of a radical reaction initiator, with any one of hypophosphorous acids (including salts thereof) and phosphites (esters) which are inexpensive, non-toxic and safely usable as radical reducing agents on an industrial scale.
The process of the present invention is an industrially useful and highly safe process for reducing sugar-moiety hydroxyl groups and halogen atoms in nucleic acids or derivatives thereof (including nucleic acid-related compounds) at low costs.
Process for producing 2', 3'-diethy substituted nucleoside derivatives
申请人:AJINOMOTO CO., INC
公开号:US20030204079A1
公开(公告)日:2003-10-30
There can be provided an excellent industrial process for producing compounds having sugar-moiety hydroxyl groups or halogen atoms reduced in nucleic acids or in derivatives thereof by allowing O-thiocarbonyl derivatives of sugar-moiety hydroxyl groups or allowing halogenated derivatives in the sugar-moiety, in the nucleic acids or in derivatives thereof to react with any one of hypophosphorous acids (including salts thereof) and phosphites (esters) which are inexpensive, non-toxic and safely usable as radical reducing agents in industrial scale, in the presence of a radical reaction initiator.
The process of the present invention is an industrially useful and highly safe process for reducing sugar-moiety hydroxyl groups and halogen atoms in nucleic acids or derivatives thereof (including nucleic acid-related compounds) at low costs.
US6579976B2
申请人:——
公开号:US6579976B2
公开(公告)日:2003-06-17
PROCESS FOR PRODUCING NUCLEIC ACID DERIVATIVES
申请人:——
公开号:US20020045744A1
公开(公告)日:2002-04-18
There can be provided an excellent industrial process for producing compounds having sugar-moiety hydroxyl groups or halogen atoms reduced in nucleic acids or in derivatives thereof by allowing O-thiocarbonyl derivatives of sugar-moiety hydroxyl groups or allowing halogenated derivatives in the sugar-moiety, in the nucleic acids or in derivatives thereof to react with any one of hypophosphorous acids (including salts thereof) and phosphites (esters) which are inexpensive, non-toxic and safely usable as radical reducing agents in industrial scale, in the presence of a radical reaction initiator.
The process of the present invention is an industrially useful and highly safe process for reducing sugar-moiety hydroxyl groups and halogen atoms in nucleic acids or derivatives thereof (including nucleic acid-related compounds) at low costs.
Hypophosphorous acid and dialkyl phosphites are effective radical reducing agents for D-thiocarbonyl groups or halides at the sugar part of nucleoside derivatives and give the corresponding hydrocarbons in high yield. (C) 2001 Elsevier Science Ltd. All rights reserved.