BMS-200475, a novel carbocyclic 2′-deoxyguanosine analog with potent and selective anti-hepatitis B virus activity in vitro
摘要:
BMS-200475, a novel carbocyclic analog of 2'-deoxyguanosine, is a potent inhibitor of hepatitis B virus in vitro (ED(50)=3 nM) with relatively low cytotoxicity (CC50=21-120 mu M). A practical 10-step asymmetric synthesis was developed affording BMS-200475 in 18% overall chemical yield and >99% optical purity. The enantiomer of EMS-200475 as well as the adenine, thymine, and iodouracil analogs are much less active. (C) 1997, Elsevier Science Ltd.
Design and Racemic Synthesis of Conformationally Restricted Carbocyclic Pyrimidine Nucleoside Analogs Based on the Structure of the L-Nucleoside Residue in Heterochiral DNA.
Carbocyclicpyrimidinenucleoside analogs which have restricted glycosidic conformation at chi approximately 180 degrees were designed, based on the conformational features of the L-nucleotide residue in heterochiral DNA, and synthesized. The synthesis of (+/-)-carbocyclic 6,6'-O-cyclo-2'-deoxyuridine was achieved via bromination and subsequent intramolecular cyclization of carbocyclic 6'beta-hydroxy-2'-deoxyuridine
Carbocyclic purine nucleoside analogues which have restricted glycosyl conformation at χ ≈ 180° were designed, based on the conformational features of the L-nucleotide residue in heterochiral DNA, and synthesized. The synthesis of (±)-carbocyclic 8,6′-O-anhydro-8,6′-dihydroxy-2′-deoxyadenosine 3 was achieved by intramolecular cyclization of the 8-bromo-6′-O-tosyl-2′-deoxyadenosine derivative. (±)-Carbocyclic
碳环嘌呤核苷类似物,其在具有受限制的构象糖χ 听,说:180°设计的基础上,构象特征大号个核苷酸残基在异向DNA,和合成。的合成(±) -碳环8,6'- Ô -anhydro-8,6'二羟基-2'-脱氧腺苷3通过的分子内环化实现8-溴-6'- ö甲苯磺酰基-2'-脱氧腺苷衍生物。(±) -碳环8,6'- Ô -anhydro-8,6'二羟基-2'-脱氧鸟苷4从碳环2,6-二氨基嘌呤核苷衍生物合成经由碳环8-溴-6'- ø -甲磺酰基-2'-脱氧鸟苷衍生物。