Carotenoids and their fatty acid esters of spiny lobster Panulirus japonicus.
Carotenoids and their fatty acid esters in the carapace of the spiny lobster Panulirus japonicus were investigated. Fatty acid esters of astaxanthin, adonixanthin, and pectenolone were characterized by (1)H-NMR and FAB-MS. The acylated position of adonixanthin and pectenolone monoesters was determined to be a hydroxy group at C-3' by (1)H-NMR. The fatty acids esterified with these carotenoids were identified as C22:6, C20:4, C20:5, C18:0, C18:1, C17:0, C16:0, C16:1, C14:0, and C12:0 from FAB-MS spectral data. Furthermore, 2,3-didehydrocanthaxanthin (4) was first identified as a natural product.
Maoka
Takashi
T
Research Institute for Production Development, Kyoto, Japan. maoka@mbox.kyoto-inet.or.jp
Akimoto
Naoshige
N
D000818:Animals; D002338:Carotenoids / Q000032:analysis* / Q000737:chemistry*; D004952:Esters; D005227:Fatty Acids / Q000032:analysis* / Q000737:chemistry*; D033521:Palinuridae
D004952:Esters; D005227:Fatty Acids; D002338:Carotenoids