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New constituents from the leaves of Morinda citrifolia.
A new iridoid glycoside, citrifoside (1), and a new anthraquinone, 1,5,15-trimethylmorindol (2), together with 24 known compounds, were isolated from the leaves of Morinda citrifolia. The structuresExpand
Convolutamydine A, a novel bioactive hydroxyoxindole alkaloid from marine bryozoan Amathia convoluta
Abstract Convolutamydine A ( 1 ), a new alkaloid containing a dibromohydroxyoxindole moiety, was isolated from the Floridian bryozoan Amathia convoluta and the structure was elucidated on the basisExpand
Studies on the biological activity of tocotrienols.
Tocotrienols were evaluated for activity against transplantable murine tumors inoculated i.p. into mouse, and the activities of two tocotrienols and alpha-tocopherols were compared. When theExpand
THE STRUCTURES OF CYTOTOXIC DITERPENES CONTAINING BROMINE FROM THE MARINE RED ALGA LAURENCIA OBTUSA (HUDSON) LAMOUROUX
Four new brominated diterpenes possessing parguerane or isoparguerane skeleton have been isolated from the title alga collected in the Japanese waters along with several known parguerol,Expand
Biologically active indole alkaloids from Kopsia arborea.
Nine new indole alkaloids, rhazinoline (1), 19(S)-methoxytubotaiwine (2), 19(R)-methoxytubotaiwine (3), kopsamidine A (4), kopsamidine B (5), kopsinidine A (6), kopsinidine B (7), paucidactine C (8),Expand
Macrosphelide, a novel inhibitor of cell-cell adhesion molecule. I. Taxonomy, fermentation, isolation and biological activities.
Potent anti-adherent activity was detected in fermentation extracts of microbial strain FO-5050. Active compounds designated macrosphelide A and B were isolated and the structure was determined to beExpand
Isolation of Ursolic Acid from Apple Peels and Its Specific Efficacy as a Potent Antitumor Agent
Dried apple peels were extracted with n-hexane, chloroform, and methanol successively. The portion of the chloroform extract that showed the strongest cytotoxic activity was purified by silica gelExpand
Sesquiterpenoids and plasmin-inhibitory flavonoids from Blumea balsamifera.
Two new sesquiterpenoid esters (1 and 2) were isolated from the extract of Blumea balsamifera, a tropical Compositae plant. Compound 2 proved to be weakly cytotoxic when tested against Jurkat humanExpand
Dendocarbins A--N, new drimane sesquiterpenes from the nudibranch Dendrodoris carbunculosa.
Fourteen new sesquiterpenes of the drimane series dendocarbins A--N (1--14) were obtained from ethanol extracts of the Japanese nudibranch Dendrodoris carbunculosa, together with two known compounds,Expand
ISOLATION AND STRUCTURE OF CONVOLUTAMYDINES B D FROM MARINE BRYOZOAN AMATHIA CONVOLUTA
Abstract Convolutamydines B ∼ D (2 ∼ 4), three new alkaloids containing a dibromohydroxyoxindole moiety, were isolated from the Floridian bryozoan Amathia convoluta and the structures were elucidatedExpand
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