Newα-Tetralone Galloylglucosides from the Fresh Pericarps ofJuglans sigillata.
Three newα-tetralone galloylglucosides (1-3), were isolated from the fresh pericarps ofJuglans sigillata(Juglandaceae), together with the six known ones. The structures of the new compounds were determined as 4,6-dihydroxy-α-tetralone-4-O-[6'-O-(3″, 4″,5″-trihydroxybenzoyl)]-β-D-glucopyranoside (1), (4S)-4,5-dihydroxy-α-tetralone-4-O-[6'-O-(3″,4″,5″-trihydroxybenzoyl)]-β-D-glucopyranoside (2) and (4S)-4,5,6-tri-hydroxy-α-tetralone-4-O-[6'-O-(3″,4″,5″-trihydroxybenzoyl)]-β-D-glucopyranoside (3), respectively, on the basis of detailed spectroscopic analyses, and acidic and enzymatic hydrolysis. The antimicrobial activities of the isolated compounds (2,4and7-9) were evaluated.
State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, P. R. China; (phone: 86-871-5223235; fax: 86-871-5150124;).
Qing
Q
Liu
Ping
P
Zhao
Xing-Cong
XC
Li
Melissa R
MR
Jacob
Chong-Ren
CR
Yang
Ying-Jun
YJ
Zhang
Juglandaceae; Juglans sigillata; antimicrobial activity; α-tetralone galloylglucosides