Scheme 6. Synthetic route to [36]CP 2 from 5-acetyl[33](1,3,5)CP 32. a) (CH3CO)2O, AlCl3, CS2, b) CH3OCHCl2, AlCl3, CH2Cl2, c) 3N aqueous NaOH, THF, CH3OH, d) H2, 10% Pd/C,THF-CH3OH, e) AlCl3, LiAlH4, THF, f) H2, PtO2, CHCl3-CH3OH, g) SmI2, 1N aqueous KOH, THF.