Objectives of the thesis: Determine the chemical constituents of two marine sponge species Rhabdastrella providentiae and Xestospongia muta living in the sea area of Central Vietnam. Evaluate cytotoxic and anti-inflammatory activities of isolated compounds to seek for active compounds for further studies to develop healthy care products for the community. | Summary of chemistry dotoral thesis: Study on chemical constituents, cytotoxic and antiinflammatory activities of the sponges Rhabdastrella providentiae and Xestospongia muta living in the sea area of Central Vietnam