Preparation of Hierarchical Ti-Sil-BEA Zeolite by Silanization Modification for the Application in Dicyclopentadiene Epoxidation Reaction.

The pore-expanding modification of zeolites is an important means to improve their catalytic performance. This study demonstrates the postsynthesis of Ti-Sil-BEA zeolites via silanization-modified parent BEA zeolite and its application in catalyzing epoxidation reactions of dicyclopentadiene (DCPD). The zeolites were characterized by BET, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, UV-vis spectroscopy, and X-ray electron spectroscopy.

Three novel sesquiterpene polyol esters from the root bark of Maxim and their nitric oxide inhibitory activity.

Three new sesquiterpene polyol ester compounds angulatin V [1,15-diacetoxy-2-(α-methyl)-butanoyloxy-4α,6α-dihydroxy-8α-isobutanoyloxy-9-benzoxy--dihydroagarofuran], angulatin W [1,2-diacetoxy-4α,6α-dihydroxy-8-carbonyl-9-benzoxy-15-isobutanoyloxy--dihydroagarofuran], angulatin X [1,28α-triacetoxy-4α, 6α-dihydroxy-9-benzoxy-15-nicotinyl--dihydroagarofuran] (), together with one known compound Putterine B (), were isolated from the root bark of Maxim. The structures of compounds were elucidated by NMR, HRESIMS, IR data, and comparison with the literature data. The anti-inflammatory activity of all compounds was evaluated by measuring nitric oxide production in RAW264.

Knowledge, Attitudes, and Practices of Physicians Regarding Targeted Drug Therapy for Lung Cancer.

Purpose: This study aimed to examine the KAP of physicians regarding targeted drug therapy for lung cancer in China.

Methods: This cross-sectional study enrolled physicians working in hospitals in Nanyang. A self-administered questionnaire was developed (Cronbach's α=0.

Three new sesquiterpene polyol esters from .

Three new sesquiterpene polyol ester compounds angulatins S-U, together with three known compounds were isolated from Maxim. According to mainly 1D NMR and 2D NMR analysis, the structures of the new compounds were completely determined as angulatin S (1β-furoyloxy-2β,8α-diisobutanoyloxy-9β-benzoyloxy-15-acetoxy-4α,6α-dihydroxy-β-dihydroagarofuran), angulatin T (1β,2β,6α-triacetoxy-8β,15-diisobutanoyloxy-9α-benzoyloxy-β-dihydroagrofuran), and angulatin U (1β,6α,15-triacetoxy-8β-isobutanoyloxy-9α-benzoyloxy-β-dihydroagarofuran).

Two new sesquiterpene pyridine alkaloids from root barks of .

Two new sesquiterpene pyridine alkaloids, Chinese bittersweet alkaloid A () and Chinese bittersweet alkaloid B (), together with five known compounds 3β- hydroxyolean-9(11),12-diene, β-sitosterol, 1β,2β,6α,15β-tetraacetoxy-8β,9α- dibenzoyloxy-β-dihydroagarofuran, angulatin A and angulatin J, were isolated from the root barks of . The structures of and were elucidated as 1β,6α,8β,9β-tetraacetoxy-2β,4α-dihydroxy-15β-isobutanoyloxy-(3,12)-evoninoyloxy-β-dihydroagarofuran and 1β,2β,6α,8β,9β-pentaacetoxy-4α-hydroxy-15β- isobutanoyloxy- (3,12)- evoninoyloxy-β-dihydroagarofuran mainly by NMR spectroscopic means.

Two new sesquiterpene polyol esters from the root barks of Celastrus angulatus.

Angulatin F (1) and angulatin I (2), two new sesquiterpene polyol esters, were isolated from the root barks of Celastrus angulatus, together with six known compounds 1β,2β-diacetoxy-4α,6α-dihydroxy-8α-isobutanoyloxy-9β-benzoyloxy-15-(α-methyl) butanoyloxy-β-dihydroagrofuran (3), angulatin A (4), angulatin B (5), celangulatin E (6), 1β,2β,15-triacetoxy-4α,6α-dihydroxy-8α-isobutanoyloxy-9β-benzoyloxy-β-dihydroagrofuran (7), and celangulin I (8). The structures of 1 and 2 were elucidated as 1β,2β,6α,15-tetraacetoxy-4α-hydroxy-8β,9α-difuroyloxy-β-dihydroagrofuran and 1β,2β,6α,8β,15-pentaacetoxy-4α-hydroxy-9β-furoyloxy-β-dihydroagrofuran by spectroscopic means.

Phenylethanoid glycosides from the roots of Phlomis umbrosa.

The phytochemical study of the roots of Phlomis umbrosa Turcz. afforded three new phenylethanoid glycosides, 3'''-acetyl-O-betonyoside D (1), 2''', 3'''-di-acetyl-O- betonyoside D (2), and 3''', 4'''-di-acetyl-O-betonyoside D (3), along with five known phenylethanoid glycosides. Their structures were elucidated on the basis of spectroscopic data.

A novel oligosaccharide ester from Syringa pubescens.

Pubescenside A (1), a novel oligosaccharide ester, has been isolated from the flowers of Syringa pubescens, together with five known compounds D-mannitol (2), meso-inositol (3), hydrostytosol (4), glucose (5), and sucrose (6). The structure of 1 was elucidated as 1-O-[beta-D-glucopyranosyl-(1-6)-beta-D-galactopyranosyl-(1-1)-beta-D-galactopyranosyl-6]-4,4-dimethylpelargonicate by chemical and spectroscopic means. The water extract of the flowers and leaves of S.