Ointment-like poly(ortho esters) were synthesized from the reaction of 3,9-bis (methylene)-2,4,8,10-tetraoxaspiro[5.5]undecane with PEG-400,N,N-bis(2-hydroxyethyl)-n-hexadecylamine and N,N-bis(2-hydroxyethyl) palmitam...Ointment-like poly(ortho esters) were synthesized from the reaction of 3,9-bis (methylene)-2,4,8,10-tetraoxaspiro[5.5]undecane with PEG-400,N,N-bis(2-hydroxyethyl)-n-hexadecylamine and N,N-bis(2-hydroxyethyl) palmitamide respectively. The influence of the catalyst on the intrinsic viscosity of polymers was also studied.展开更多
S)-1-Ethoxysilatrane-4-carboxylic acid and (4S)-1-ethoxy-3-methylsiatrane-4-Carboxylic acid were synthesize from the reaction of triethoxysilane with L-N,N-bis(2-hydroxyethyl)serine of L-N, N-bis (2-hydroxyethyl) thre...S)-1-Ethoxysilatrane-4-carboxylic acid and (4S)-1-ethoxy-3-methylsiatrane-4-Carboxylic acid were synthesize from the reaction of triethoxysilane with L-N,N-bis(2-hydroxyethyl)serine of L-N, N-bis (2-hydroxyethyl) threonine in the presence of pyridine展开更多
文摘Ointment-like poly(ortho esters) were synthesized from the reaction of 3,9-bis (methylene)-2,4,8,10-tetraoxaspiro[5.5]undecane with PEG-400,N,N-bis(2-hydroxyethyl)-n-hexadecylamine and N,N-bis(2-hydroxyethyl) palmitamide respectively. The influence of the catalyst on the intrinsic viscosity of polymers was also studied.
文摘S)-1-Ethoxysilatrane-4-carboxylic acid and (4S)-1-ethoxy-3-methylsiatrane-4-Carboxylic acid were synthesize from the reaction of triethoxysilane with L-N,N-bis(2-hydroxyethyl)serine of L-N, N-bis (2-hydroxyethyl) threonine in the presence of pyridine
