Enantiospecific Synthesis of 5′-Noraristeromycin and its 7-Deaza Derivative and A Formal Synthesis of (-)-5′-Homoaristeromycin

Abstract
Beginning with the treatment of the diacetate of cis-3,5-cyclopentenediol (5) with Pseudomonas cepacia lipase, (-)-5′-noraristeromycin (1) and (-)-7-deaza 5′-noraristeromycin (3) have been prepared. Subjecting 5 to treatment with porcine liver esterase led to an efficient preparation of a substituted cyclopentane precursor which, following literature precedence, can be converted into (-)-5′-homoaristeromycin (4).