Intra- and intermolecular hetero-Diels-Alder reactions. 15. Asymmetric induction in Grignard and hetero-Diels-Alder reactions of chiral .alpha.,.beta.-unsaturated carbonyl compounds
A diastereoselective cobalt-mediated synthesis of benzopyrans using a novel variation of an intramolecular Nicholas reaction in the key cyclisation step: optimisation and biological evaluation 1
of novel intramolecular cyclisation reactions between an organocobalt stabilised cation and a trisubstituted alkene have been accomplished that provide a concise route for the diastereoselective synthesis of a range of functionalised benzopyrans. In addition to the usual Lewis acids employed in the Nicholas reaction our studies have identified several other reagents for effecting the cyclisation reaction
The present invention provides compounds useful for increasing cellular ATP binding cassette transporter ABCA1 production in mammals, and to methods of using such compounds in the treatment of coronary artery diseases, dyslipidiemias and metabolic syndrome. The invention also relates to methods for the preparation of such compounds, and to pharmaceutical compositions containing them.
An Efficient, One-Pot Synthesis of Isomeric Ellipticine Derivatives through Intramolecular Imino-Diels−Alder Reaction
作者:Vikram Gaddam、Rajagopal Nagarajan
DOI:10.1021/ol800497u
日期:2008.5.1
New analogues of isomeric ellipticine derivatives fused with biologically important pyrroloindole or chromene moiety have been synthesized by utilizing an intramolecular imino Diels-Alder reaction in a single step.
Ethylenediamine diacetate (EDDA) mediated synthesis of aurones under ultrasound: Their evaluation as inhibitors of SIRT1
作者:Khanapur Manjulatha、S. Srinivas、Naveen Mulakayala、D. Rambabu、M. Prabhakar、Kalle M. Arunasree、Mallika Alvala、M.V. Basaveswara Rao、Manojit Pal
DOI:10.1016/j.bmcl.2012.08.017
日期:2012.10
of functionalized aurones has been accomplished via the reaction of benzofuran-3(2H)-one with a range of benzaldehydes in the presence of a mild base EDDA under ultrasound. A number of aurones were synthesized (within 5–30 min) and the molecularstructure of a representative compound determined by single crystalX-ray diffraction study confirmed Z-geometry of the C–C double bond present within the