SYNTHESIS AND ALPHA(2)-ADRENERGIC ACTIVITY OF 2-[(METHYLENEAMINO)OXY]-N-(GUANIDINO)ETHANEIMINES - A BIOISOSTERIC REPLACEMENT OF THE ARYL OFGUANABENZ-TYPE BENZYLIDENEAMINOGUANIDINE ALPHA(2)-AGONISTS WITH THE [(METHYLENEAMINO)OXY]METHYL MOIETY (MAOMM)
A. Balsamo et al., SYNTHESIS AND ALPHA(2)-ADRENERGIC ACTIVITY OF 2-[(METHYLENEAMINO)OXY]-N-(GUANIDINO)ETHANEIMINES - A BIOISOSTERIC REPLACEMENT OF THE ARYL OFGUANABENZ-TYPE BENZYLIDENEAMINOGUANIDINE ALPHA(2)-AGONISTS WITH THE [(METHYLENEAMINO)OXY]METHYL MOIETY (MAOMM), European journal of medicinal chemistry, 31(9), 1996, pp. 713-716
Some 2-[(methyleneamino)oxy]-N-(guanidino)ethaneimines (10a-g) were sy
nthesized as analogs of guanabenz-type benzylideneaminoguanidine alpha
(2)-agonists (9) in which the aryl portion (Ar) is substituted by the
[(methyleneamino)oxy]methyl moiety (MAOMM). The alpha(2)-adrenergic ac
tivity of compounds 10a-g was evaluated by functional tests on guinea-
pig ileum. The MAOM-derivatives 10a-g exhibited an alpha(2)-adrenergic
stimulating activity fairly similar to that of the benzylideneaminogu
anidine reference drug guanabenz, thus supporting the hypothesis of th
e existence of a bioisoster-like relationship between the MAOMM and th
e Ar in the class of guanabenz-type alpha(2)-adrenergic agonists.