A new sesquiterpenoid lactone, 3,6,9-trimethyl-pyrano[2,3,4-de]chromen-2-one (1) and a novel sesquiterpenoid quinone, 6-[2-(5-acetyl-2,7-dimethyl-8-oxo-bicyclo
The alkylation of methylnaphthalene(MN) with methanol in the presence of HZSM-5 is a promising route for producing 2,6-dimetylnaphthalene(2,6-DMN) with a high s
A series of TiO 2-XSiO 2[X denotes the molar fraction(%) of silica in the mixed oxides] with different {n(Ti)}/n(Si) ratios was prepared with ammonia water as
Two novel analogues of triptolide were synthesized using triptolide as the starting materialthrough reductive opening of epoxy ring, hydration and olefin epoxid