| abstract |
Aza porphyrin derivs. of formula (I) are new. In (I), R1 and R2 = each H, opt. substd. 1-20C alkyl, 5-7C cycloalkyl or opt. substd. Ph; or 2 neighbouring R1 gps., together with the C atoms to which they are attached, form an unsatd. or aromatic 5-7 membered carbocyclic ring; X = H or 1-4C alkyl; Y = N; and p = 1-2. |