Dual Stereoselectivity in the Dialkylzinc Reaction Using (−)-β-Pinene Derived Amino Alcohol Chiral Auxiliaries
作者:Caitlin M. Binder、April Bautista、Marek Zaidlewicz、Marek P. Krzemiński、Allen Oliver、Bakthan Singaram
DOI:10.1021/jo802371z
日期:2009.3.20
morpholino group through a simple substitution reaction. 3-MAP was characterized by X-ray crystallography, which displayed the rigidity of the pinane framework. Amino alcohol 2-MAP was prepared from its trans isomer 2, which in turn was synthesized via hydroboration/oxidation of the morpholine enamine of (+)-nopinone. Two-dimensional NMR was used to characterize amino alcohol 2-MAP, and NOE was used to confirm
Methods of inhibiting the replication of influenza viruses in a biological sample or patient, of reducing the amount of influenza viruses in a biological sample or patient, and of treating influenza in a patient, comprises administering to said biological sample or patient an effective amount of a compound represented by Structural Formula (I):
or a pharmaceutically acceptable salt thereof, wherein the values of Structural Formula (IA) are as described herein. A compound is represented by Structural Formula (IA) or a pharmaceutically acceptable salt thereof, wherein the values of Structural Formula (IA) are as described herein. A pharmaceutical composition comprises an effective amount of such a compound or pharmaceutically acceptable salt thereof, and a pharmaceutically acceptable carrier, adjuvant or vehicle.
Methods of inhibiting the replication of influenza viruses in a biological sample or patient, of reducing the amount of influenza viruses in a biological sample or patient, and of treating influenza in a patient, comprises administering to said biological sample or patient an effective amount of a compound represented by Structural Formula (I):
or a pharmaceutically acceptable salt thereof, wherein the values of Structural Formula (IA) are as described herein. A compound is represented by Structural Formula (IA) or a pharmaceutically acceptable salt thereof, wherein the values of Structural Formula (IA) are as described herein. A pharmaceutical composition comprises an effective amount of such a compound or pharmaceutically acceptable salt thereof, and a pharmaceutically acceptable carrier, adjuvant or vehicle.
Controlling the Helicity of 2,2‘-Bipyridyl Ruthenium(II) and Zinc(II) Hemicage Complexes
作者:Karl D. Oyler、Frederick J. Coughlin、Stefan Bernhard
DOI:10.1021/ja067016v
日期:2007.1.1
Complexation of these ligands to Ru(II) afforded diastereomerically pure Delta and Lambda isomers, as verified through circulardichroism and circularly polarized luminescence spectroscopy. Ligands (+)-L2 and (-)-L2 were further coordinated to Zn(II) to form a complex with intriguing photophysical properties. Whereas Zn(bpy)32+ was shown to be a fluorescent emitter outside the visible spectrum, the
Synthesis of Tetrahydrocannabinols Based on an Indirect 1,4-Addition Strategy
作者:Anthony D. William、Yuichi Kobayashi
DOI:10.1021/jo020457m
日期:2002.12.1
requires 1,4-addition of bulky cuprates to cyclohexenones and subsequent reaction with electrophiles. However, the enolates generated by BF(3).OEt(2)-assistance suffer from lack of nucleophilicity. To circumvent this problem, we developed an indirect method consisting of the following three steps: (1) iodination of the cyclohexenones at the alpha position; (2) BF(3).OEt(2)-assisted 1,4-addition of cuprates