[EN] SUBSTITUTED CYCLOPENTENES, THEIR PREPARATION AND THEIR USE FOR CHIRAL SCAFFOLDS<br/>[FR] CYCLOPENTENES SUBSTITUES, LEUR PREPARATION ET LEUR UTILISATION POUR DES OSSATURES CHIRALES
申请人:CHIROTECH TECHNOLOGY LTD
公开号:WO2001017952A1
公开(公告)日:2001-03-15
3,4-Disubstituted-1-cyclopentene compounds, in substantially enantiopure form, have the relative stereochemistry according to formula (1A) or (1B) including the opposite enantiomers thereof, wherein R1 is either COOX, wherein X is alkyl, H or a salt-forming cation, or CH¿2?OH, wherein the hydroxyl group is optionally protected; R?2¿ is H or a protecting group; R3 is H or alkyl; and R4 is H, alkoxy, alkyl, aryl or aralkyl; or, in the case of formula 1A, R?2 and R4¿ are linked to form an oxazolidinone ring. These compounds can be used to prepare a series of complementary stereochemically varied cyclopentane scaffolds.
3,4-二取代-1-环戊烯化合物,其绝大部分为对映体纯形式,具有相对立体化学式(1A)或(1B),包括其相反对映体,其中R1为COOX,其中X为烷基,氢或形成盐的阳离子,或CH2OH,其中羟基可选地被保护;R2为氢或保护基;R3为氢或烷基;R4为氢,烷氧基,烷基,芳基或芳基烷基;或者,在公式1A的情况下,R2和R4结合形成噁唑烷酮环。这些化合物可用于制备一系列互补的立体化学变化的环戊烷支架。