Journal ArticleDOI
Mono-, Bi-, and triphenanthrenes from the tubers of Cremastra appendiculata.
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TLDR
Six newphenanthrene derivatives, including three monophenanthrenes (1-3), two biphenanholdes (4 and 5), and a triphenanthrene (6), have been isolated from an ethanolic extract of the tubers of Cremastra appendiculata.Abstract:
Six newphenanthrene derivatives, including three monophenanthrenes (1-3), two biphenanthrenes (4 and 5), and a triphenanthrene (6), have been isolated from an ethanolic extract of the tubers of Cremastra appendiculata. Using spectroscopic methods, the structures of compounds 1-6 were determined as 1-hydroxy-4,7-dimethoxy-1-(2-oxopropyl)-1H-phenanthren-2-one (1), 1,7-dihydroxy-4-methoxy-1-(2-oxopropyl)-1H-phenanthren-2-one (2), 2-hydroxy-4,7-dimethoxyphenanthrene (3), 2,7,2'-trihydroxy-4,4',7'-trimethoxy-1,1'-biphenanthrene (4), 2,2'-dihydroxy-4,7,4',7'-tetramethoxy-1,1'-biphenanthrene (5), and 2,7,2',7',2' '-pentahydroxy-4,4',4' ',7' '-tetramethoxy-1,8,1',1' '-triphenanthrene (6), respectively. Compounds 1-6 and two known compounds, cirrhopetalanthin (7) and flavanthrinin (8), obtained previously from this plant, were evaluated against six human cancer cells and a normal cell line.read more
Citations
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Therapeutic orchids: traditional uses and recent advances--an overview.
TL;DR: The present study reviews the traditional therapeutic uses of orchidaceous preparations with its recent advances in pharmacological investigations that would be a useful reference for plant drug researches, especially in orchids.
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Natural phenanthrenes and their biological activity.
TL;DR: The present study furnishes an overview of the hydroxy or/and methoxy-substituted 9,10-dihydro/phenanthrene, methylated, prenylated and other monomeric derivatives, dimeric and trimeric phenanthrenes and their biological activities.
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Orchids : A review of uses in traditional medicine, its phytochemistry and pharmacology
TL;DR: A comprehensive account of chemical constituents and biological activities of orchids, including alkaloids, bibenzyl derivatives, flavonoids, phenanthrenes and terpenoids which have been isolated recently from this species are presented.
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Glycosides from the root of Iodes cirrhosa.
Maoluo Gan,Yanling Zhang,Sheng Lin,Mingtao Liu,Weixia Song,Jiachen Zi,Yongchun Yang,Xiaona Fan,Jiangong Shi,Jin-Feng Hu,Jiandong Sun,Nai-Hong Chen +11 more
TL;DR: In the in vitro assays, compound 4 and liriodendrin both showed activity against glutamate-induced PC12 cell damage at 10 (-5) M M, and the validity of J 7,8 and Deltadelta C8-C7 values to distinguish threo and erythro derivatives was discussed.
Journal ArticleDOI
Bioactive Phenanthrene and Bibenzyl Derivatives from the Stems of Dendrobium nobile.
Xue-Ming Zhou,Cai-Juan Zheng,Li-She Gan,Guang-Ying Chen,Xiao-Peng Zhang,Xiao-Ping Song,Gao-Nan Li,Chong-Ge Sun +7 more
TL;DR: A new enantiomeric pair of spirodiketones, (+)- and (-)-denobilone A (1 and 2), three new phenanthrene derivatives (3-5), and three new biphenanthrenes (22-24), along with 11 known phenanthene derivatives (6-16), five known bibenzyl derivatives (17-21), and four known biphenAnthrenes
References
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Journal ArticleDOI
Rapid colorimetric assay for cellular growth and survival: Application to proliferation and cytotoxicity assays
TL;DR: A tetrazolium salt has been used to develop a quantitative colorimetric assay for mammalian cell survival and proliferation and is used to measure proliferative lymphokines, mitogen stimulations and complement-mediated lysis.
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Biphenanthrenes from Bletilla striata
TL;DR: Three new biphenanthrenes were isolated from tubers of Bletilla striata together with batatasin Ill and 3′-O-methylbatatasin III and the structures were elucidated from their spectroscopic data.
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Dimeric phenanthrenes from the orchid Bulbophyllum reptans
TL;DR: In this paper, Reptanthrin and isoreptanthrin, two new dimeric phenanthrenes, were isolated from the orchid Bulbophyllum reptans which also afforded nine known stilbenoids, viz.
Journal ArticleDOI
Accumulation of tyrosol glucoside in transgenic potato plants expressing a parsley tyrosine decarboxylase.
Jörn Landtag,Alfred Baumert,Thomas Degenkolb,Jürgen Schmidt,Victor Wray,Dierk Scheel,Dieter Strack,Sabine Rosahl +7 more
TL;DR: The results indicate that expression of a tyrosine decarboxylase in potato does not channel tyramine into the hydroxycinnamoyl-CoA:tyramine N-(hydroxycinn amoyl)-transferase reaction but rather unexpectedly, into a different pathway leading to the formation of a potential storage compound.
Journal ArticleDOI
Phenanthrene glucosides from Bletilla striata
TL;DR: In this article, four phenanthrene glucosides were isolated from tubers of Bletilla striata and the structures were elucidated as 2,7-dihydroxy-4methoxyphenanthrene-2- O -glucoside.