Metal-promoted synthesis of amidines containing the model nucleobases 1-methylcytosine and 9-methyladenine
作者:Diego Montagner、Ennio Zangrando、Giuseppe Borsato、Vittorio Lucchini、Bruno Longato
DOI:10.1039/c1dt10638d
日期:——
[NH2C(R)1-MeCy(-H)}]2(NO3)2, exchanging with trace amounts of water at 25 °C. [15N,1H]-HMBC experiments for 5b and 6b indicate that the amino tautomer H2N-C(Ph)nucleobase(-2H)}, is the only detectable in solution and such structure has been confirmed in the solid state. The reaction of 5b and 6b with cis-L2Pt(ONO2)2 (L = PPh3), in chlorinated solvents, determines the immediate appearance of a pale yellow
idine络合物顺式-[L 2 PtNH C(R)1-MeCy(-2H)}] NO 3(R = Me,1a ; Ph,1b,Me 3 C,1c ; Ph 2(H)C,1d)和顺式-[L 2 PtNH C(R)9-MeAd(-2H)}] NO 3(R = Me,2a ; Ph,2b ; Me 3 C,2c ; Ph 2(H)C,2d)中,形成当顺- [L 2的Pt(μ -OH)] 2(NO 3)2(L = PPh 3)与1-甲基胞嘧啶 (1-MeCy)和 9-甲基腺嘌呤(9-MeAd)在MeCN,PhCN,Me 3 CCN和Ph 2(H)CCN的溶液中。1a,b和2a,b与HCl反应,得到质子化的[[NH 2 C(R)1-MeCy(-H)}] NO 3(R = Me,3a ; Ph,3b)和[NH 2 C (R)9-MeAd(-H)}] NO 3(R = Me,4a ; Ph,4b)和顺式-(PPh