Ventosic acid

Ursen-3/3-ol, see A-00027 12-Ursen-3-one, in A-00027 Ustilic acid /I, in D-00129 Ustilic acid B, in T-00190 Ustilohydrazide B, in T-00190 Vaccenic acid, in 0-00160 (Z)-Vaccenic acid, in 0-00160 Vaccenyl alcohol, in 0-00166 Ventosic acid, see T-00085... 

The higher fatty acids and their lactones occurring in lichens can be divided into three groups ) -lactone acid derivatives [nine members, e.g., protolichesterinic acid (1)] dibasic fatty acids [roccellic acid (2)] and tri-basic fatty acids [caperatic, nor- and rangiformic acids (3)]. In addition, two tetrahydroxy fatty acids, e.g., ventosic acid [CH3(CH2)8(CHOH)2-CH2— (CH0H)2(CH2)7C00H] have been reported (Solberg, 1957). All aliphatic lichen acids are optically active. 

---