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Some p-tert-butylcalix[4]arene Schiff base crown ethers were synthesized, characterized using 1 H, 13 C-NMR, DEPT 135 and Mass spectrometry. Their complexes with C 60 were isolated and characterized. The inhibition effect of these complexes on HIVP was studied and found that complexes of 9 and 10 have comparable Ki values to Pepstatine which is known as HIVP inhibitor and used...
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