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Phytochemical investigations of Stemona curtisii and synthetic studies on stemocurtisine alkaloids.
The isolation of two new Stemona alkaloids, 1-hydroxyprotostemonine and stemocurtisine N-oxide, and a new benzofuran, stemofuran L, from the root extracts of Stemona curtisii is reported. The majorExpand
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Phytochemical and larvicidal studies on Stemona curtisii: structure of a new pyrido[1,2-a]azepine Stemona alkaloid.
A new pentacyclic Stemona alkaloid, stemocurtisinol (3), with a pyrido[1,2-a]azepine A,B-ring system, and the known pyrrolo[1,2-a]azepine alkaloid oxyprotostemonine (4) have been isolated from a rootExpand
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Alkaloids from the roots of Stemona aphylla.
Three known compounds, stemofoline (1), (2'S)-hydroxystemofoline (2), and (11Z)-1',2'-didehydrostemofoline (3), along with two new alkaloids, stemaphylline (4) and stemaphylline-N-oxide (5), haveExpand
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Phytochemical studies on Stemona plants: isolation of stemofoline alkaloids.
Six new stemofoline alkaloids, (2'R)-hydroxystemofoline (5), (3'R)-stemofolenol (6), (3'S)-stemofolenol (7), 1',2'-didehydrostemofoline-N-oxide (8), the first C(19) stemofoline alkaloid,Expand
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Isolation and characterization of Orientia tsutsugamushi from rodents captured following a scrub typhus outbreak at a military training base, Bothong district, Chonburi province, central Thailand.
Orientia tsutsugamushi, an obligate intracellular Gram-negative bacterium, is the causative agent of scrub typhus, a vector-borne disease transmitted by infected chiggers (trombiculid mite larvae).Expand
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THE EFFECTS OF ACORUS CALAMUS LINN. AND STEMONA TUBEROSE LOUR. EXTRACTS ON THE INSECT PEST, PLUTELLA XYLOSTELLA (LINNAEUS)
The effects of Stemona tuberosa Lour. and Acorus calamus Linn. ethanol extracts on the Diamondback Moth, Plutella xylostella (Linnaeus) was investigated. It was found that a 0.4 % A. calamus extractExpand
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Phytochemical studies on Stemona aphylla: isolation of a new stemofoline alkaloid and six new stemofurans.
A new stemofoline alkaloid, (2'S)-hydroxy-(11S,12R)-dihydrostemofoline (3), new stemofurans M-R (8-13), and known compounds stemofoline (1), (2'S)-hydroxystemofoline (2), stemofuran E (4), stemofuranExpand
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Stemocurtisine, the first pyrido[1,2-a]azapine Stemona alkaloid.
A new pentacyclic stemona alkaloid, stemocurtisine (2), with a novel pyrido[1,2-a]azapine A,B-ring system, has been isolated from a root extract of Stemona curtisii. The structure and relativeExpand
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Semisynthesis and biological activity of stemofoline alkaloids.
The semisynthesis of the Stemona alkaloids (3'R)-stemofolenol (1), (3'S)-stemofolenol (2), methylstemofoline (3), and (3'S)-hydroxystemofoline (5) and the unnatural analogues (11E)-methylstemofolineExpand
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