The other five compounds were identified as squamolone (8), pinocembrin (9), succinic acid (10), β sitosterol (11) and stigmasterol (12) on the basis of spectral analysis (IR, MS, NMR and 2D NMR).

Objective To design and synthesize a series of squamosamide cyclic analogues and to test their antioxidation activity.

The mass spectra of squamosamide analogs show bond forming and rupturing to give a new unusual fragment.

Experimental chemotherapy against xenografts derived from multidrug resistant KBv200 cells and parental drug-sensitive KB cells in nude mice by annonaceous acetogenin 89-2;

Atemoyacin D (1) , a novel tetrahydroxy adjacent bis - tetrahydrofuranyl annonaceous acetogenin was isolated from the alcoholic extracts of Annona atemoya seeds and characterized by spectroscopic techniques,in addition to the known compounds, neo-annonin B (2) , neo-desacetyluvaricin (3),parviflorin (4) and annonacin (5).

Three known annonaceous acetogenins were isolated from the bark of Annona glabra Linn, for the first time and they were identified as annonacin (1), corossolone (2) and solamin based on their spectral data.

Progress in the studies on structure types and action mechanism of Annonaceous acetogenins;

Preliminary Study on Resource of Chemical compound of Annonaceous acetogenins in Yunnan;

This paper reviews the kinetic characterization of mito-chondrial complex Ⅰ inhibited by annonaceous acetogenins and their structural activity relationships, and the applications of annona-ceous acetogenins as anticancer drugs and insecticides.

Research achievements since1980s on the diseases of custard apple fruits are summarized,including2physiological diseases and15pathological diseases.

The author introduced the basic botanical characteristics of custard apple and suggested two kinds of potential developing methods to obtain the products that could be used as delicious friut materials in food industry in the development of biological resources.