A new species, Dendrocalamus velutinus N.-H. Xia, V. T. Nguyen & V. D. Vu (Poaceae) from Vietnam, is described, illustrated and discussed. It is similar to Dendrocalamus calostachyus (Kurz) Kurz in general appearance, but differs by many morphological characters.

by its inconspicuous culm sheath auricles, margins with 8 -10 mm long fi mbriations, fi mbriate ligules of culm sheath 11 -14 mm long, palea with 3 veins between and 1 vein on either side of the keels, and blunt paleaceous apex.

A five-step procedure was used to synthesize four novel conjugates of AZT and adenosine with quinazolinone scaffold. In the last step, alkynes-1 of quinazolinone were coupled to adenosine azide and AZT by Click chemistry to yield the designed conjugates. Their structures were characterized by full-length data of spectra including 1H-, 13C-NMR and MS. Screening for their in vitro anti-inflammatory activity was performed using Murine macrophage RAW 264.7 cells. The relationship between structure and biological activity was also discussed.

In this research, we presented a method for preparation of four new derivatives of murrayafoline A. They were synthesized via Claisen-Schmidt reaction from two consecutive O-alkylation and N¬-alkylation reactions. Four derivatives including compounds 15-18 were tested for cytotoxic activity. The result showed that these four derivatives exhibited cytotoxic activity against to cancer cell P388 with IC50 value ranging from 22,7 to 46,96 μg/mL, however they had no cytotoxicity against to other four human cancer cells LU-1, Hep-G2, MCF7 and SW480.

Marinobacter sp. strain C7 was isolated from seawater collected on the Con Bung coast, Vietnam. Here, we report a draft genome sequence of strain C7 consisting of 4,057,300 bp with 59.2% GC content and 109 contigs. The genome sequence of strain C7 provides an overview of its halophilic properties.