TY - JOUR
T1 - Studies on the constituents of Leonotis nepetaefolia
AU - Takeda, Tadahiro
AU - Narukawa, Yuji
AU - Hada, Noriyasu
PY - 1999/2
Y1 - 1999/2
N2 - Three antioxidative phenylethanoid glycosides and two new iridoid glycosides, along with three known iridoids were isolated from the African medicinal plant, Leonotis nepetaefolia R. BR. (Labiatae). The new iridoid glycosides were established as 10-O-(trans-3,4-dimethoxycinnamoyl)geniposidic acid and 10-O-(p-hydroxybenzoyl)geniposidic acid. Antioxidative activities of the compounds were measured by α,α-diphenyl-β-picrylhydrazyl (DPPH) method, and the three known phenylethanoid glycosides, acteoside, martynoside and lavandulifolioside showed strong antioxidative activity.
AB - Three antioxidative phenylethanoid glycosides and two new iridoid glycosides, along with three known iridoids were isolated from the African medicinal plant, Leonotis nepetaefolia R. BR. (Labiatae). The new iridoid glycosides were established as 10-O-(trans-3,4-dimethoxycinnamoyl)geniposidic acid and 10-O-(p-hydroxybenzoyl)geniposidic acid. Antioxidative activities of the compounds were measured by α,α-diphenyl-β-picrylhydrazyl (DPPH) method, and the three known phenylethanoid glycosides, acteoside, martynoside and lavandulifolioside showed strong antioxidative activity.
KW - Acylated geniposidic acid
KW - Antioxidative activity
KW - Labiatae
KW - Leonotis nepetaefolia
KW - Phenylethanoid glycoside
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U2 - 10.1248/cpb.47.284
DO - 10.1248/cpb.47.284
M3 - Article
AN - SCOPUS:0032941937
VL - 47
SP - 284
EP - 286
JO - Chemical and Pharmaceutical Bulletin
JF - Chemical and Pharmaceutical Bulletin
SN - 0009-2363
IS - 2
ER -