@article{PAR00002165, title = {{S}ynthesis of phosphonodipeptide conjugates of ursolic acid and their homologs}, author = {{D}eng, {S}. {L}. and {B}aglin, {I}. and {N}our, {M}ohammed and {C}av{\'e}, {C}.}, editor = {}, language = {{ENG}}, abstract = {{T}o prepare novel derivatives of naturally bioactive 3 beta-hydroxy-urs-12-en-28-oic acid (ursolic acid) with unusual properties and broad spectrum of activities, a number of chemical reactions were conducted. {F}irst, a variety of alpha-aminophosphonates were prepared by a series of reactions involving the three-component {M}annich type reaction as a key step. {S}econd, an array of phosphonodipeptides and their homologs was synthesized through multistep reactions including condensation of phthalic anhydride with glycine or beta-alanine, chlorination of {N}-blocked amino acids, coupling of acid chloride with alpha-aminophosphonates and sequential hydrazinolysis. {F}inally, new classes of phosphonodipeptide conjugates of ursolic acid and their homologs were obtained by condensation of 3 beta-acetoxy-urs-12-en-28-oyl chloride with phosphonodipeptides and their homologs.}, keywords = {}, booktitle = {}, journal = {{H}eteroatom {C}hemistry}, volume = {19}, numero = {1}, pages = {55--65}, ISSN = {1042-7163}, year = {2008}, DOI = {10.1002/hc.20396}, URL = {https://www.documentation.ird.fr/hor/{PAR}00002165}, }