Morphology studies showed that the curve of N,N-dialkyl chitosan was depended on the length of side chain,and the backbone molecular weight influenced the size of corresponding vesicle.

Results showed that: there were best range of the amount of solicitation reagent,the amount of polyethylene glycol,the length of the polyoxydation ethene side chain and the best time temperature and of the esteri.

Advances in synthesis of taxol C-13 side chain:N-benzoyl-(2R,3S)-3-phenylisoserine;

Stereoselective synthesis of taxol C-13 side chain;

Cefixime open side chain acid was prepared by oximation,etherification,chlorination,ester decomposition using t-butyl acetoacetate as starting material.

Chloromethyl group was used as a functional reactive group to graft poly(propylene glycol) side-chain,and we attained polyimide with PPG side-chain modification,the structure of the product was identified by FTIR and 1H NMR.

Then main methods and algorithms involved in side-chain constructing and loop-region constructing of homologous protein are discussed,and major algorithms that are concerned in conformation search of unhomologous protein are analyzed and compared.

Influence of alkyl side chain structure of poly-α-olefine on pour point depression effect and suitability;