Two new halogenated sesquiterpene lactones from .

Two new sesquiterpene lactones, laurenolide A () and laurenolide B (), along with six known compounds, palmitic acid (), (,)-hexahydrofarnesyl acetone (), -phytol acetate (), cholesterol (), cholesteryl acetate (), cholesteryl heptadecanoate () were isolated from . The chemical structures of all compounds were elucidated by 1D and 2D-NMR spectroscopy and HR-ESI-MS analysis as well as compared with data in the literature. The petroleum ether, chloroform, ethyl acetate, methanol extracts and compounds , were tested for the inhibition of two cancer cell lines MCF-7, NCI-H460 and they showed weak or none activities.

Utilization of Crab Waste for Cost-Effective Bioproduction of Prodigiosin.

This study aimed to establish the culture process for the cost-effective production of prodigiosin (PG) from demineralized crab shell powder (de-CSP), a fishery processing byproduct created via fermentation. Among the tested PG-producing strains, TNU02 was demonstrated to be the most active strain. Various ratios of protein/de-CSP were used as the sources of C/N for PG biosynthesis.

Two new sesquiterpenes from the stems of .

From the ethyl acetate extract of the stems of , seven compounds (-) were isolated, including two new compounds such as mivelutina A acid (), mivelutina B acid () and one known compound mivelutina B methyl ester (). For this NMR data were not known previously. Their relative structures were elucidated based on NMR spectroscopic analysis.

A new lignan from the flowers of L. (Malvaceae).

From MeOH-soluble fraction of the flowers of (Malvaceae), one new lignan, (+)-4--methyl-5'-methoxy-secoisolariciresinol (), together with four known compounds (-) were isolated. The structures were elucidated based on NMR spectroscopic analysis. The absolute configuration of was determined based on the Cotton effects in the CD spectrum.

Chemical constituents of Geum urbanum L. roots.

A new dehydrodigallic acid derivative (1), along with 19 known compounds, including 6 phenolic derivatives, 2 steroids and 11 triterpenoids were isolated from the ethanol extract of the root of Geum urbanum. Herein, there is the first report of steroid and triterpene in Geum urbanum. The purified metabolites were characterised by NMR spectroscopic and mass spectrometric analyses.