发明名称 |
METHOD OF PREPARING BETA-ANOMER ENRICHED NUCLEOSIDES |
摘要 |
<p>FIELD: chemical industry. SUBSTANCE: method of preparing beta-anomer enriched nucleosides of formula (I): <EMI ID=0.427 HE=21 WI=33 TI=CHI> wherein T is fluorine and R is nucleoside defined in claim 1. SN<SB>2</SB> substitution is carried out optionally in suitable solvent of sulfonyloxy groups (IV) from monomer- enriched carbohydrate of formula (II): <EMI ID=0.428 HE=21 WI=36 TI=CHI> wherein X is independently selected from hydroxy protective groups, T is as defined above, by at least monomer equivalent of corresponding nucleobase at 17 to 120 C and deblocking is carried out to form compound of formula (I). Method is stereoselective. EFFECT: more efficient preparation method. 20 cl</p> |
申请公布号 |
RU2131880(C1) |
申请公布日期 |
1999.06.20 |
申请号 |
RU19930046709 |
申请日期 |
1993.06.21 |
申请人 |
EHLI LILLI EHND KOMPANI |
发明人 |
TA-SEN CHOU;LAURI MISHEL' POTIT;DUGLAS PEHTTON K"ELL;KORA SJU GROSSMAN;LARRI VEJN KHERTEL;ZICHARD EHLMER KHOLMS;CHARL'Z DEHVID DZHOUNS;TOMAS EHDVARD MEHBRI |
分类号 |
C07H19/073;C07H19/173;(IPC1-7):C07H19/073 |
主分类号 |
C07H19/073 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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