Figure 4From: Single-step synthesis of a new series of meso di-Mannich bases from the cyclic aminal (2S,7R,11S,16R)-1,8,10,17-tetraazapentacyclo[8.8.1.1.8,170.2,7011,16]icosane and p-substituted phenols HOMO and LUMO tridimensional representation, calculated using Gaussian 1998 with DFT B3LYP at the 6-31G(d,p) level for cyclic aminal 6. Back to article page