A new hydroxytetradecatrienoic acid and its glyceryl esters from Valsa ambiens
摘要:
A new hydroxytetradecatrienoic acid and its two glyceryl esters were isolated from a culture filtrate of Valsa ambiens. 1-Hydroxytetradecatrienoyl-sn-glycerol and 3-hydroxytetradecatrienoyl-sn-glycerol, only differing in the configuration of carbon 2', were separated as their corresponding MTPA esters. The absolute stereochemistry of the asymmetric centre of the acid and the two asymmetric centres of the esters were determined by using advanced Mosher methodology. The glyceryl esters exhibited an inhibitory effect on the growth of lettuce roots and hypocotyls.
Synthesis of (<i>S</i>)-13-Hydroxy (2<i>E</i>,4<i>E</i>,8<i>E</i>)- and (2<i>E</i>,4<i>E</i>,8<i>Z</i>)-Tetradecatrienoic Acids
作者:Ying Jiao、Teruhiko Yoshihara、Akitami Ichihara
DOI:10.1271/bbb.59.1032
日期:1995.1
The syntheses of (S)-13-hydroxy-(2E,4E,8E)-tetradecatrienoic acid (1) and (2E,4E,8Z)-tetradecatrienoic acid (2) were carried out by using the Wittig reaction as the key step. The asymmetric center at C-13 and the double bond between C-8 and C-9 for natural compound 1 were reconfirmed as being of (S) configuration and E, respectively.The relationship between the structure of the unsaturated hydroxy fatty acids and their inhibitory effect on the growth of lettuce was investigated.
A new hydroxytetradecatrienoic acid and its two glyceryl esters were isolated from a culture filtrate of Valsa ambiens. 1-Hydroxytetradecatrienoyl-sn-glycerol and 3-hydroxytetradecatrienoyl-sn-glycerol, only differing in the configuration of carbon 2', were separated as their corresponding MTPA esters. The absolute stereochemistry of the asymmetric centre of the acid and the two asymmetric centres of the esters were determined by using advanced Mosher methodology. The glyceryl esters exhibited an inhibitory effect on the growth of lettuce roots and hypocotyls.