CHRALITY OF PLECTANIAXANTHIN

Article abstract of DOI:10.1016/0031-9422(82)83049-5

The chirality of plectaniaxanthin, a carotenoid vic. glycol from Plectania coccinea, colud not be determined by the modified Horeau method.Chiroptical correlation of plectaniaxanthin acetonide and (2'S)-16',17'-dinorplectaniaxanthin acetonide was taken as proof of 2'R chirality for natural plectaniaxanthin and its mono- and diesters.The synthesis of the chiral model carotenoid was effected from D-mannitol via 2,3-isopropylidene-D-glyceraldehyde as key synthon.Key Word Index - Plectania coccinea; Ascomycetes; chirality; characteristic carotenoid; plectaniaxanthin; (2'R)-3',4'-didehydro-1',2'-dihydro-β,ψ-carotene-1',2'-diol.