A series of N6-alkyladenosine 3', 5'-cyclic phosphates (N6-alkyl cAMPs) (3) and N6-alkyl-8-benzylthio cAMPs (4) was synthesized from cAMP (1) and 8-benzylthio cAMP (2) by means of a one-pot reaction. This reaction proceeded by reductive alkylation in acetic acid with aldehydes and sodium cyanoborohydride. These cAMP derivatives were evaluated for inotropic and chronotropic effects on the isolated guinea pig papillary muscle and right atria. Several N6-alkyl cAMPs (3) were surprisingly more active than compounds 4 in these actions. Among them, N6-hexyl cAMP (3f) and M6-heptyl cAMP (3g) showed strongly positive inotropic effects (PIE) and moderately negative chronotropic effects.
一系列N6-烷基
腺苷3',5'-环
磷酸酯(N6-烷基c
AMPs)(3)和N6-烷基-8-苄
硫基c
AMPs(4)通过一锅法反应从c
AMP(1)和8-苄
硫基c
AMP(2)合成。该反应在
乙酸中通过醛和
氰基硼氢化钠的还原烷基化进行。这些c
AMP衍
生物被评估对离体豚鼠乳头肌和右心房的变力和变时效应。几种N6-烷基c
AMPs(3)在这些作用上出乎意料地比化合物4更活跃。其中,N6-己基c
AMP(3f)和N6-庚基c
AMP(3g)显示出强烈的正性变力效应和中等程度的负性变时效应。