Three new dihydroisocoumarin penicimarins G-I (1-3), together with one known dihydroisocoumarin (4) and three known meroterpenoids (5-7), were obtained from a fungus Penicillium citrinum isolated from the mangrove Bruguiera sexangula var. rhynchopetala collected in the South China Sea. Their structures were elucidated by the detailed analysis of spectroscopic data. The absolute configuration of...

Luffa acutangula and Luffa cylindrica are the two important species under the genus Luffa. These two species are used by traditional medicinal practitioners for treating various human disorders. The phytochemical analysis of the various parts of these plants has revealed many phytoconstituents of medicinal importance. The wide distribution of these species has made it easily available and many ...

The location o f malate dehydrogenase in the cyanobacteria, Anabaena cylindrica, Nostoc muscorum and Chlorogloeopsis fritsch ii was investigated by the fractionation o f cell-free ex­ tracts. The bulk o f the enzyme activity was associated with the thylakoid membrane fraction, which also exhibited complete photosynthetic electron transport reactions. Malate dehydro­ genase activity and photosys...

Bioactivity-guided fractionation of the methanolic extract of the rhizomes of Imperata cylindrica afforded a new compound, 5-hydroxy-2-(2-phenylethyl)chromone (1), together with three known compounds, 5-hydroxy-2-[2-(2-hydroxyphenyl)ethyl]chromone (2), flidersiachromone (3), and 5-hydroxy-2-styrylchromone (4). Among these four compounds, 1 and 2 showed significant neuroprotective activity again...

Preparations of heterocysts of Anabaena cylindrica Lemm. had 7- to 8-fold higher activities of glucose 6-phosphate dehydrogenase and 6-phosphogluconate dehydrogenase, 2-fold more hexokinase activity, and 0.02 to 0.06 times as much ribulose diphosphate carboxylase and glyceraldehyde 3-phosphate dehydrogenase activities as did whole filaments per milligram soluble protein in cell-free extracts. T...

The marine ascidian Clavelina cylindrica produces a series of interesting tricyclic quinolizidine and indolizidine alkaloids that show toxicity in a brine shrimp assay.1 Cylindricines A (1), C (2), D (3), E (4), and F (5) differ only in the functionality of the methylene substituent in the fivemembered ring. Interestingly, cylindricines A and B (7) interconvert simply upon standing in solution,...

in this study, 110 samples of bread wheat, aegilops crassa, ae. cylindrica and ae. tauschii were investigated to identify low-molecular-weight glutenin subunits. overall, the four alleles in term of the analysis of sds-page gels were detected. the ʻaʼ allele with 45% has the greatest frequency, and after that, ʻbʼ, ʻcʼ and ʻdʼ alleles were with 38.1%, 11.8% and 9.1% frequencies, respectively; h...

Objective: In traditional medicines, Imperata cylindrica (hereinafter referred to as I. cylindrica) roots are more frequently used than its leaves. The aim of this study was determine three parameters, namely the content total phenolic compounds, flavonoid content, and antioxidant activity leaves extracts. Then, root extract parameters were a comparison evaluate benefits herbal medicine.
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