Citation: Mg. Voronkov et al., POLYFUNCTIONAL MACROHETEROCYCLES .7. SYNT HETIC ANALOGS OF ENZYMES - SYNTHESIS OF 16-MEMBERED AND 22-MEMBERED NITROGEN-CONTAINING AND SULFUR-CONTAINING CROWN COMPOUNDS INCLUDING EXOCYCLIC FRAGMENTS OF HISTAMINE, HISTIDINE AND CARBOXYL GROUPS, Himia geterocikliceskih soedinenij, (1), 1993, pp. 130-133