Novel trifluoroethanol mediated synthesis of benzo[ a ]pyrene 7,8-diol 9,10-epoxide adducts at the N 2 -position of deoxyguanosine and the N 6 -position of deoxyadenosine
作者:Andagar R Ramesha、Heiko Kroth、Donald M Jerina
DOI:10.1016/s0040-4039(00)02220-6
日期:2001.2
The exocyclic amino groups of deoxyadenosine and deoxyguanosine readily add to C-10 of the benzo[a]pyrene7,8-diol 9,10-epoxides at room temperature overnight in trifluoroethanol. Whereas the dG adducts are obtained as a mixture of cis- and trans-opened diastereomers, the dA adducts arise exclusively by cis-opening.
脱氧腺苷和脱氧鸟苷的环外氨基容易在室温下于三氟乙醇中过夜添加至苯并[ a ] py7,8-二醇9,10-环氧化物的C-10中。dG加合物是以顺式和反式非对映异构体的混合物形式获得的,而dA加合物仅通过顺式打开而产生。
New and Highly Efficient Synthesis of <i>Cis</i>- and <i>Trans</i>-Opened Benzo[<i>a</i>]pyrene 7,8-Diol 9,10-Epoxide Adducts at the Exocyclic <i>N</i><sup>2</sup>-Amino Group of Deoxyguanosine
作者:Heiko Kroth、Haruhiko Yagi、Albrecht Seidel、Donald M. Jerina
DOI:10.1021/jo000522x
日期:2000.9.1
Stereochemistry of addition of the N(2)-exocyclic amino group of dG (cis-trans, approximately 1:1) was assigned by NMR, and the absolute configuration of the dG adducts was unequivocally assigned by CD spectroscopy after separation of each individual diastereomer and cleavage of the allyl protecting group. A strong CD band at 279 nm in the O(6)-protected adduct was found to be diagnostic for configuration at