The cytochrome P 450 monooxygenase models I (Q = p-tolyl; M = Zn, MnCl, Co)(II) were prepared from reaction of p-tert-butylcalix[4]arene with 5-p-(4-chlorocarbonylbutoxy)phenyl-10,15,20-tris(p-tolyl)porphyrin followed by inserting of metal ions. The structures of II and their precursor I (M = 2 H) (III) were confirmed by IR, 1H NMR, MS and elemental anal. 1H NMR (500MHz) spectra provide evidence for the "cone" conformation of calixarene residue in III.

Key words: INFRARED SPECTROPHOTOMETRY, ELEMENTAL ANALYSIS, MASS SPECTROGRAPHY, PROTON MAGNETIC RESONANCE SPECTROMETRY, CYTOCHROME, CALIXARENE, METALLOPORPHYRIN