χ-caroten-4-one, assigned to tedanin, the main carotenoid pigment of the marine sponge “Tedania digitata (O. Schmidt),” has been confirmed by total synthesis starting with β,χ-carotene. An isomer, 3-hydroxy-2,3-didehydro-β,φ-caroten-4-one, was also synthesized from β,φ-carotene.
结构,3-羟基-2,3-didehydro-β,χ-caroten-4-one,分配给 tedanin,海海绵“Tedania digitata (O. Schmidt)”的主要类
胡萝卜素色素,已被总以β,χ-
胡萝卜素开始合成。异构体,3-羟基-2,3-didehydro-β,φ-caroten-4-one,也由β,φ-
胡萝卜素合成。