Synthesis of α-(aminomethylene)-9<i>H</i>-purine-6-acetic acid derivatives
作者:Norimitsu Hamamichi、Tadashi Miyasaka
DOI:10.1002/jhet.5570280236
日期:1991.2
α-(Aminornethylene)-9H-purine-6-acetamide (3a) and the corresponding ethyl acetate 9 have been synthesized by catalytic hydrogenation of 6-cyanomethylenepurine derivatives 2 and 7 which were obtained by the substitution of 6-chloropurine derivatives with α-cyanoacetamide and ethyl cyanoacetate, respectively. Substitution of α-(aminomethylene)-9-(tetrahydrofuran)-9H-purine-6-acetamide (3b) with amines
HAMAMICHI, NORIMITSU;MIYASAKA, TADASHI, J. HETEROCYCL. CHEM., 28,(1991) N, C. 397-400
作者:HAMAMICHI, NORIMITSU、MIYASAKA, TADASHI
DOI:——
日期:——
HAMAMICHI, NORIMITSU;MIYASAKA, TADASHI, TETRAHEDRON LETT., 1985, 26, N 39, 4743-4746
作者:HAMAMICHI, NORIMITSU、MIYASAKA, TADASHI
DOI:——
日期:——
A convenient method for the synthesis of 6-enaminopurine derivatives by catalytic hydrogenation of 6-cyanomethylenepurines
作者:Norimitsu Hamamichi、Tadashi Miyasaka
DOI:10.1016/s0040-4039(00)94939-6
日期:1985.1
6-Cyanomethylenepurines have been catalytically hydrogenated to the corresponding α-(aminomethylene)purine-6-acetic acid derivatives in good yields using dimethylformamide-benzene as solvent over Pd-C under medium pressure.