2-Aza-3-oxabicyclo[2.2.1]heptene hydrochloride: An exceptionally versatile synthon for carbocyclic sugars and nucleosides
摘要:
The transformation of cyclopentadiene to 5'-desmethylene 1'-aza carbocyclic sugars has been achieved in four steps: 1. Cycloaddition of chloronitrosocyclohexane to 2-aza-3-oxabicyclo[2.2.1]heptene hydrochloride in EtOH-Et(2)O, 2. Nitrogen functionalization, 3. cis hydroxylation and 4. N-O bond cleavage. The protocols provided enable practical access to a range of 5'-desmethylene carbocyclic sugar analogs whose utility has been illustrated with synthesis of a novel 5'-desmethylene analog of aristeromycin. (C) 1997 Elsevier Science Ltd.
2-Aza-3-oxabicyclo[2.2.1]heptene hydrochloride: An exceptionally versatile synthon for carbocyclic sugars and nucleosides
作者:Subramania Ranganathan、K.Shaji George
DOI:10.1016/s0040-4020(97)00057-4
日期:1997.3
The transformation of cyclopentadiene to 5'-desmethylene 1'-aza carbocyclic sugars has been achieved in four steps: 1. Cycloaddition of chloronitrosocyclohexane to 2-aza-3-oxabicyclo[2.2.1]heptene hydrochloride in EtOH-Et(2)O, 2. Nitrogen functionalization, 3. cis hydroxylation and 4. N-O bond cleavage. The protocols provided enable practical access to a range of 5'-desmethylene carbocyclic sugar analogs whose utility has been illustrated with synthesis of a novel 5'-desmethylene analog of aristeromycin. (C) 1997 Elsevier Science Ltd.
2,N-6-disubstituted adenosines and their antihypertensive methods of use
申请人:Glaxo Group Limited
公开号:US05032583A1
公开(公告)日:1991-07-16
Compounds of formula (I) ##STR1## wherein X represents a hydrogen or chlorine atom, or a methyl group; and R represents a cycloalkyl or cycloalkenyl ring containing 5 to 8 carbon atoms, which ring is substituted by a hydroxy group, and is optionally substituted by a C.sub.1-6 alkyl group and salts and solvates thereof. The new compounds have been found to exhibit activities such as an anti-lipolytic action. Processes for preparing the compounds of formula (I) and compositions containing them are also described.