In an article, author is Dai, Jia-Meng, once mentioned the application of 140-11-4, HPLC of Formula: C9H10O2, Name is Benzyl acetate, molecular formula is C9H10O2, molecular weight is 150.17, MDL number is MFCD00008712, category is esters-buliding-blocks. Now introduce a scientific discovery about this category.
ent-Kaurane-Based Diterpenoids, Dimers, and Meroditerpenoids from Isodon xerophilus
Eight new diterpenoids (1-8) with varied structures were isolated from the aerial parts of Isodon xerophilus. Among them, xerophilsin A (1) was found to be an unusual meroditerpenoid representing a hybrid of an ent-kauranoid and a long-chain aliphatic ester, xerophilsins B-D (2-4) are dimeric ent-kauranoids, while xerophilsins E-H (5-8) are new ent-kauranoids. The structures of 1-8 were elucidated mainly through the analyses of their spectroscopic data. The absolute configurations of 2, 6, and 8 were confirmed by single-crystal X-ray diffraction, and the configuration of C-16 in 7 was established through quantum chemical calculation of NMR chemical shifts, as well as modeling of key interproton distances. Bioactivity evaluation of all isolated compounds revealed that 2, 3, and 5 inhibited NO production in LPS-stimulated RAW264.7 cells.
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