Water-soluble forskolin and 7-deacetylforskolin derivatives with an aminoacetyl, a 3- aminopropionyl, or a 4-aminobutyryl group at the 6-or 7-position were prepared, and their positive inotropic as well as vasodilative activities were evaluated in anesthetized dogs. 7- Deacetylforskolin (2) and 7-deacetyl-1-silylforskolin (6) were converted to the corresponding 7-chloroacylderivatives (3, 7, 10), which were reacted with amines to obtain 7-aminoacyl-7 ...