7α-OXYGENATED LIMONOIDS FROM THE RUTACEAE

Article abstract of DOI:10.1016/0031-9422(82)85203-5

Limonol, deoxylimonol, and 7α-obacunol were isolated from Citrus paradisi seeds.Limonoyl acetate and 7α-obacunol acetate were isolated from fruit of a Citrus-Poncirus hybrid, along with two other new 7α-acetates, 1(10->19) abeo-obacun-9(11)-en-7α-yl acetate and 1(10->19) abeo-7α-acetoxy-10β-hydroxyiso-obacunoic acid 3,10-lactone.The latter two represent a unique limonoid structural type in which a methyl carbon has been inserted into a ring.Key Words Index: Citrus paradisi; Poncirus trifoliata x (Citrus sinensis x C. paradisi); Rutaceae; limonoids; limonol; limonyl acetate, deoxylimonol; 7α-obacunol; 7α-obacunyl acetate; 1(10->19) abeo-7α-acetoxy-10β-hydroxyiso-obacunoic acid 3,10-lactone.