1817-88-5Relevant academic research and scientific papers
Chitosan grafted with a heteropolyanion-based ionic liquid as an effective and reusable catalyst for acetalization
Zhang, Wei-Hong,Liu, Shan-Shan,Liu, Ping,Xu, Jie,Xue, Bing,Wei, Xian-Yong,Li, Yong-Xin
, p. 41404 - 41409 (2016/05/19)
Chitosan immobilized with an acidic ionic liquid (CS-VImPS-PW) was fabricated via a radical addition reaction of N-vinylimidazoliumpropane sulfonate and chitosan, followed by acidification with a heteropolyacid. It was characterized by a Fourier transform infrared spectrometer, solid-state 13C nuclear magnetic resonance spectrometer, thermogravimetric analyzer, elemental analyzer, and Hammett indicator. Some acetalization reactions were investigated to evaluate the catalytic activity of CS-VImPS-PW. The results show that CS-VImPS-PW is highly active for the acetalization reactions in high acetal yields ranging from 83.2 to 96.2% and can be reused 8 times without noticeable loss of activity.
Glucopyranosyl derivative and application thereof in medicines
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Paragraph 0413; 0417; 0418; 0419, (2016/10/08)
The invention relates to a glucopyranosyl derivative used as a sodium-dependent glucose transporter (SGLT) inhibitor, a medicinal composition containing the derivative, and an application of the derivative and the medicinal composition in medicines, and especially relates to the glucopyranosyl derivative represented by formula (I) or a pharmaceutically acceptable salt or all stereoisomers thereof, or the medicinal composition containing the derivative, and a use of the derivative and the medicinal composition in the preparation of medicines for treating diabetes and diabetes related diseases.
SUBSTITUTED XANTHINES AND METHODS OF USE THEREOF
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Page/Page column 396; 397, (2014/09/29)
Compounds, compositions and methods are described for inhibiting the TRPC5 ion channel and disorders related to TRPC5.
Reductive cleavage of acetals/ketals with ZrCl4/NaBH4
Purushothama Chary,Santosh Laxmi,Iyengar
, p. 1257 - 1261 (2007/10/03)
Reductive cleavage of acetals/ketals with zirconium tetrachloride- sodium borohydride leading to the formation of ether alcohols is described.
ZrCl4-catalyzed scission of ethylene acetals with organoaluminum compounds
Vostrikova,Gafarova,Dokichev,Zlotskii
, p. 1530 - 1532 (2007/10/03)
Ethylene acetals and ethylene ketals undergo reductive scission under the action of Bui2AlH in the presence of catalytic amounts of ZrCl4. With Et3Al and Bui3Al, reductive alkylation also occurs.
A mild and simple procedure for the reductive cleavage of acetals and ketals
Srikrishna, Adusumilli,Viswajanani, Ranganathan
, p. 3339 - 3344 (2007/10/02)
A convenient, mild and simple procedure, employing sodium cyanoborohydride in the presence of either catalytic or stoichiometric amount of boron trifluoride etherate in dry THF, for the reductive cleavage of the acetals and ketals is described.
REDUCTION OF ACETALS WITH CpTiCl3-LiAlH4
Shaozu, Wu,Yin, Chen,Yulan, Zhang
, p. 421 - 424 (2007/10/02)
The reduction of cyclic acetals and ketals derived from aromatic or aliphatic aldehydes and ketones with CpTiCl3-LiAlH4 system in diethyl ether at 30 deg C affords the corresponding hydroxyethyl ethers and the corresponding alkyl benzene or aliphatic hydrocarbons.
