@article{fdi:010082586,
  title = {{G}lycosides of polygalacic acid from the stem barks of {P}iper guineense {S}chum and {T}honn},
  author = {{K}amto, {E}. {L}. and {N}ote, {O}. {P}. and {K}inyok, {M}. and {W}ilhelm, {A}. and {M}bing, {J}. {N}. and {A}ntheaume, {C}. and {A}tchad, {A}. {D}. and {P}egnyemb, {D}. {E}. and {N}dinteh, {D}. {T}. and {H}addad, {M}ohamed and {B}onnet, {S}. {L}.},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n a continuation of our study on constituents of {P}. guineense now focusing on the search for saponins, phytochemical investigation of the n-{B}u{OH} fraction of {P}. guineense stem bark led to the isolation of three previously undescribed triterpenoid saponins, named guineenosides {AC} (13). {T}heir structures were established on the basis of extensive analysis of 1{D} and 2{D} {NMR} (1{H}, 13{C} {NMR}, {DEPT}, {COSY}, {TOCSY}, {NOESY}, {HSQC}, {HSQC}-{TOCSY} and {HMBC}) and {HRESIMS} experiments, and by chemical evidence as 3-{O}-{alpha-{L}-rhamnopyranosyl-(1 -> 3)-beta-{D}xylopyranosyl-(1 -> 2)-alpha-{L}-arabinopyranosyl-(1 -> 4)-alpha-{L}-rhamnopyranosyl-(1 -> 3)-[alpha-{L}-arabinofuranosyl-(1 -> 4)]-alpha-{L}-rhamnopyranosyl-(1 -> 3)-beta-{D}-fucopyranosyl} polygalacic acid 28-{O}-alpha-{L}-rhamnopyranosyl-(1 -> 4)-alpha-{L}rhamnopyranosyl-(1 -> 3)-beta-{D}-xylopyranosyl ester (1), 3-{O}-{alpha-{L}-rhamnopyranosyl-(1 -> 3)-beta-{D}-xylopyranosyl-(1 -> 2)-alpha-{L}-arabinopyranosyl-(1 -> 4)-alpha-{L}-rhamnopyranosyl-(1 -> 3)-[alpha-{L}-arabinofuranosyl-(1 -> 4)]-alpha-{L}-rhamnopyranosyl-(1 -> 3)-beta-{D}-fucopyranosyl} polygalacic acid 28-{O}-beta-{D}-glucopyranosyl-(1 -> 3)-alpha-{L}-rhamnopyranosyl(1 -> 4)-alpha-{L}-rhamnopyranosyl-(1 -> 3)-beta-{D}-xylopyranosyl ester (2), and 3-{O}-{alpha-{L}-rhamnopyranosyl-(1 -> 2)-beta-{D}xylopyranosyl-(1 -> 3)-beta-{D}-fucopyranosyl} polygalacic acid 28-{O}-[alpha-{L}-rhamnopyranosyl-(1 -> 4)-alpha-{L}-rhamnopyranosyl-(1 -> 3)-beta-{D}-xylopyranosyl ester (3). {T}his is the first report of triterpenoid saponins from {P}. guineense.},
  keywords = {{P}iperaceae ; {P}iper guineense ; {T}riterpenoid saponins ; {NMR} ; {G}uineenosides},
  booktitle = {},
  journal = {{C}arbohydrate {R}esearch},
  volume = {507},
  numero = {},
  pages = {108374 [7 ]},
  ISSN = {0008-6215},
  year = {2021},
  DOI = {10.1016/j.carres.2021.108374},
  URL = {https://www.documentation.ird.fr/hor/fdi:010082586},
}