479-26-5Relevant articles and documents
Synthesis of barbacic acid
Long, Yi,Luo, Guo-Yong,Xi, Yin-Kai,Yang, Wu-De,Yu, Xiang
, (2022/01/11)
A new approach for the synthesis of the active barbatic acid has been achieved in eight steps with 22.3% total yield by using commercially available methyl atratate as starting material. This synthesis provides access to multi-gram quantities of barbatic
Chemical study on Garhwal Himalayan Lichen: Usnea emidotteries
Rawat,Shukla, Vertika,Negi, Sandeep,Pant
, p. 2566 - 2570 (2007/10/03)
Usnea species are medicinally important, so we take unexplored species, Usnea emidotteris. Seven components 2-hydroxy-3-methoxy-4, 6-dimethyl ethyl benzoate, 2, 4-dihydro-xy-3, 6-dimethyl ethyl benzoate, 2-hydroxy-4-methoxy-3, 6-dimethylbezoic acid, usnic
Hypoalectorialic acid and conechinocarpic acid, two new benzyl esters from lichens
Elix, John A.,Wardlaw, Judith H.
, p. 727 - 729 (2007/10/03)
The benzyl esters hypoalectorialic acid [6-(2′,4′-dihydroxy-3′,6′-dimethylbenzoyloxymethyl)-2,4- dihydroxy-3-methylbenzoic acid] (5) and conechinocarpic acid [1′,4′-dihydroxy-6′-methoxy-3′-oxo-1′,3′- dihydroisobenzofuran-5′-ylmethyl 2-hydroxy-4-methoxy-3,6-dimethylbenzoate] (7) have been isolated from the lichens Hypotrachyna hypoalectorialica and Relicina samoensis respectively. The structure of the compounds (5) and (7) followed from a combination of spectroscopic and chemical data.
LICHEN ACIDS, PLANT GROWTH INHIBITORS FROM USNEA LONGISSIMA
Nishitoba, Yukiko,Nishimura, Hiroyuki,Nishiyama, Tohru,Mizutani, Junya
, p. 3181 - 3186 (2007/10/02)
Eight components, depsides and orcinol derivatives which exhibit growth-inhibitory activity against lettuce seedlings were isolated from Usnea longissima and identified from their physicochemical data.Key Word Index - Usnea longissima; depside; β-orcinol;