Cinchonain-Ib is a flavonolignan found in the bark of Trichilia catigua used as catuaba.[1] A 2009 study revealed that Cinchonian-Ib derived from boiled Eriobotrya japonica leaves has a glucose-lowering effect in rats, and could possibly be used to manage diabetes mellitus in humans.[2]

References

  1. ^ Beltrame, F. L.; Filho, E. R.; Barros, F. A. P.; Cortez, D. A. G.; Casset, Q. B. (2006). "A validated higher-performance liquid chromatography method for quantification of cinchonain Ib in bark and phytopharmaceuticals of Trichilia catigua used as Catuaba". Journal of Chromatography A. 1119 (1–2): 257–263. doi:10.1016/j.chroma.2005.10.050. PMID 16360665.
  2. ^ Qa’dan, Fadi; Verspohl, Eugen. J.; Nahrstedt, Adolf; Petereit, Frank; Matalka, Khalid Z. (15 July 2009). "Cinchonain Ib isolated from Eriobotrya japonica induces insulin secretion in vitro and in vivo". Journal of Ethnopharmacology. 124 (2): 224–227. doi:10.1016/j.jep.2009.04.023. ISSN 0378-8741. PMID 19397981. Retrieved 19 October 2022.