CARBOCYCLIC NUCLEOSIDES AND PROCESS FOR OBTAINING SUCH
申请人:Stichting REGA V.Z.W.
公开号:EP1210347B1
公开(公告)日:2004-06-23
Robust synthesis of enantiopure cyclohexenyl analogues of 2/3-deoxyribose sugars as carbocyclic nucleoside precursors
作者:Manojkumar Varada、Venubabu Kotikam、Vaijayanti A. Kumar
DOI:10.1016/j.tet.2011.06.003
日期:2011.8
An expedient synthesis of 2-deoxy (10) and 3-deoxy (11) cyclohexenyl analogues of 2-deoxy and 3-deoxy-d-ribose sugar from commercially available starting materials is reported. Highly efficient enzymatic resolution of the key compound 10 is described using lipase under hydrolytic conditions. The robust methodology applied here will be useful to synthesize cyclohexenylnucleosides, which possess potent
A novel and facile synthesis of 5-hydroxy-4-hydroxymethyl-2-cyclohexenylguanine 1 is described. The key steps involve a Diels-Alder reaction of ethyl (2E)-3-acetyloxy-2-propenoate 2 as dienophile with Danishefsky's diene 3 to build up the six-membered ring skeleton, a Fraser-Reid reductive rearrangement of the adduct using LiAlH(4), and base-moiety introduction using a Mitsunobu reaction. Optically