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Effects of preferential diffusion on the burning intensity of curved flames
Using the Bunsen flame as a model curved flame, the coupled influence of preferential diffusion and flame stretch on the burning intensity of lean and rich mixtures of methane, propane, butane,… Expand
Insect growth inhibitory Nor-diterpenes, cis-dehydrocrotonin and trans-dehydrocrotonin, from Croton cajucara
Abstract cis -Dehydrocrotonin, a new nor -diterpene isolated from Croton cajucara , has been identified on the basis of spectroscopic analysis. The biological activity of both cis -dehydrocrotonin… Expand
Musidunin and musiduol, insect antifeedants from Croton jatrophoides.
Two novel limonoids, musidunin (1) and musiduol (2), were isolated from a methanol extract of Croton jatrophoides by bioassay-guided fractionation. Their structures were established by extensive NMR… Expand
Structures of Ganoderic Acid A and B, Two New Lanostane Type Bitter Triterpenes from Ganoderma lucidum (FR.) KARST.
The structures of two new bitter triterpenes, ganoderic acid A and B. isolated from a mushroom Ganoderma lucidum (FR.) Karst. (Polyporaceae) were determined as 1 and 2 on the basis of spectral data.… Expand
Short reportStudies on a bitter principle from Vernonia anthelmintica
Isolation and identification of apolar metabolites of ingested 20-hydroxyecdysone in frass ofHeliothis virescens larvae
A large amount of 20-hydroxyecdysone was orally administered to larvae of the tobacco budworm,Heliothis virescens, in order to investigate its detoxification mechanisms. Four major relatively… Expand
Perseapicroside A, hexanorcucurbitacin-type glucopyranoside from Persea mexicana
Abstract Perseapicroside A, a new bitter hexanorcucurbitacin-type glucoside isolated from Persea mexicana , has been assigned the structure 2,3,16-trihydroxy-… Expand
CONSTITUENTS OF VITEX ROTUNDIFOLIA L. FIL.
Four secoiridoid glucosides from Jasminum mesnyi
Abstract Along with the flavonoid glucoside, rutin, three new secoiridoid glucosides, 9″-hydroxyjasmesoside, 9″-hydroxyjasmesosidic acid and jasminin 10″- O -β- d -glucoside have been isolated from… Expand
STRUCTURES OF SECO-IRIDOIDS FROM LIGSTRUM OBTUSIFOLIUM SIEB. ET ZUCC.
From spectroscopic evidence, the two seco-iridoids ligstro-side and 10-hydroxyligstroside, isolated from Ligstrum obtusifolium Sieb. et Zucc., are assigned the structures (I) and (V), respectively.