79786-01-9Relevant academic research and scientific papers
LIQUIDAMBIN, AN ELLAGITANNIN FROM LIQUIDAMBAR FORMOSANA
Okuda, Takuo,Hatano, Tsutomu,Kaneda, Tamami,Yoshizaki, Masao,Shingu, Tetsuro
, p. 2053 - 2056 (1987)
Key Word Index - Liquidambar formosana; Hamamelidaceae; tannin; hydrolysable tannin; ellagitannin; liquidambin; equilibration; biogenesis; casuarinin; pedunculagin. A new ellagitannin, named liquidambin, which could be biogenetically closely correlated with casuarinin and pedunculagin, has been isolated from the leaves of Liquidambar formosana.Its structure was determined as 5-O-galloyl-2,3,4,6-di-O-(S)-hexahydroxydiphenoyl-D-glucose.The structural equilibration due to hydration of the aldehyde group of the glucose core in this tannin was shown from its (1)H and (13)C NMR spectra.
Total Synthesis of Casuarinin
Wakamori, Shinnosuke,Matsumoto, Shintaro,Kusuki, Reina,Ikeuchi, Kazutada,Yamada, Hidetoshi
, p. 3392 - 3396 (2020)
This study involves the total synthesis of casuarinin, a naturally occurring ellagitannin, in which an open-chain glucose is esterified with two (S)-hexahydroxydiphenoyl (HHDP) groups. One HHDP group incorporates a C-glycosidic bond between its benzene ring and the glucose moiety, which was constructed with complete stereoselectivity using a benzyl oxime group that opened the glucopyranose ring and acted as a scaffold for C-glycoside production. This total synthesis enables future structure-activity relationship studies of this compound.
