Pentacyclic Triterpenoids from Leaves of Excoecaria agallocha
نویسندگان
چکیده
منابع مشابه
Pentacyclic triterpenoids from olive fruit and leaf.
This work establishes a new procedure for the extraction and analysis of pentacyclic triterpenes, with which fruits and leaves from three Spanish olive cultivars ("Picual", "Hojiblanca", and "Arbequina") has been studied. The leaf contains important amounts of oleanolic acid (3.0-3.5% DW), followed by significant concentrations of maslinic acid and minor levels of ursolic acid, erythrodiol, and...
متن کاملEffects of Salinity and Nutrient Addition on Mangrove Excoecaria agallocha
Effects of salinity on seed germination and growth of young (1 month old) and old (2-year old) seedlings of Excoecaria agallocha were investigated. Combined effects of salinity and nutrient level were also examined on old seedlings. Seed germination was best at 0 and 5 psu salinity. 15 psu salinity significantly delayed root initiation and decreased final establishment rate. All seeds failed to...
متن کاملPhytochemical Composition and In vitro Antimicrobial, Antioxidant Activites of Methanolic Leaf Extracts From Excoecaria agallocha
1School of Fisheries and Aquaculture Sciences, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Malaysia. 2Institute of Tropical Aquaculture (Aquatrop), Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Malaysia. 3 Institute of marine biotechnology, Universiti Malaysia Terengganu, 21030 Terengganu, Malaysia. 4Agriculture and Food Science, Universiti Malaysia Terengganu, 21030 Teren...
متن کاملPentacyclic triterpenoids from the medicinal herb, Centella asiatica (L.) Urban.
Centella asiatica accumulates large quantities of pentacyclic triterpenoid saponins, collectively known as centelloids. These terpenoids include asiaticoside, centelloside, madecassoside, brahmoside, brahminoside, thankuniside, sceffoleoside, centellose, asiatic-, brahmic-, centellic- and madecassic acids. The triterpene saponins are common secondary plant metabolites and are synthesized via th...
متن کاملA new atisane-type diterpene from the bark of the mangrove plant Excoecaria agallocha.
A new atisane-type diterpene, ent-16alpha-hydroxy-atisane-3,4-lactone (4) and three known diterpenes, ent-16alpha-hydroxy-atisane-3-one (1), ent-atisane-3beta,16alpha-diol (2), ent-3,4-seco-16alpha-hydroxyatis- 4(19)-en -3-oic acid (3) were isolated from the bark of the mangrove plant Excoecaria agallocha. Their structures and relative stereochemistry were elucidated by means of extensive NMR a...
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ژورنال
عنوان ژورنال: Chemical and Pharmaceutical Bulletin
سال: 2006
ISSN: 0009-2363,1347-5223
DOI: 10.1248/cpb.54.920