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Two New Flavonol Glycosides From The Aerial Parts of Lotus lalambensis Growing in Saudi Arabia
Hanan M. El-Youssef,Brian T. Murphy,Masouda E. Amer,Adnan J. Al-Rehaily,Maged S. Abdel-Kader,David G. I. Kingston 한국생약학회 2008 Natural Product Sciences Vol.14 No.2
Phytochemical study of the aerial parts of Lotus lalambensis Schweinf resulted in the isolation and identification of two new flavonol glycosides; kaempferol 3-O-(5"-acetyl)-apioside-7-O-α-L-rhamnopyranoside (1) and kaempferol 3-O-α-[β-D-xylosyl-(1"" → 2")-L-rhamnopyranoside]-7-O-α-L-rhamnopyranoside (2). Structures were determined utilizing different physical, chemical, spectroscopic data including 2D-NMR experiments and HRFABMS.
The role of alcohols and diols as co-solvents in fabrication of TON zeolite
Anas Karrar Jamil,Oki Muraza,Adnan M. Al-Amer 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.29 No.-
Numerous industrial catalysts and sorbents require better control of crystal size and morphology of thezeolites. Here, we report a method to selectively control the crystal size and morphology of ZSM-22 byusing alcohols and diols as co-solvents in water–alcohol system. The results demonstrated the role of cosolventin controlling the crystallization growth of ZSM-22 zeolite. Addition of co-solvent suppressednucleation of unwanted cristobalite phase in crystallization and growth of ZSM-22 zeolite. We foundthat alcohols and diols as cheap co-solvent are effective in tuning and controlling crystal size, aspect ratioand co-crystalization phases of zeolite ZSM-22