3620-19-7Relevant academic research and scientific papers
IMIDAZO(1,2-a)PYRIDINE DERIVATIVE
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Page 78, (2010/02/09)
A compound reprsented by the following formula (I), its salts or nsolvates thereof capable of specifically or selectively expressig an antifungal activity in a broad spectrum based on the novel mechanism thereof of 1,6-β-glucan synthesis inhibition, and an antifungal agent containing any of them.
Intramolecular H-Transfer Reactions During the Decomposition of Alkylhydroperoxides in Hydrocarbons as the Solvents
Jinsheng, Li,Pritzkow, Wilhelm,Voerckel, Volkmar
, p. 43 - 52 (2007/10/02)
Eight defined primary and secondary alkylhydroperoxides were decomposed in n-alkanes as the solvent, mostly in the presence of manganese stearate.In all cases the corresponding alcohols and carbonyl compounds were formed as the main products with yields of 60-90percent.Besides, difunctional products were formed by an intramolecular H-transfer in the alkoxy radicals corresponding to the starting hydroperoxides.Products possibly formed by an intramolecular H-transfer in the corresponding alkylperoxy radical could be found only in the case of 4-methyl-2-hydroperoxy pentane.The amount of products formed by intramolecular H-transfer depended on the nature of the C-H bond in δ-position to the original hydroperoxy group and lay between 4percent (primary C-H in the case of 4-hydroperoxy heptane) and 13percent (tertiary C-H in the case of 2-hydroperoxy-5-methyl hexane) with respect to the starting hydroperoxide.The amount of products formed by oxidative attack of the alkoxy and alkylperoxy radicals at the normal paraffins used as the solvents was unexpectedly low (always less than 10percent with respect to the starting hydroperoxide).An increment system is proposed for the calculation of 13C-nmr shifts in alkyl hydroperoxides.
Process for the preparation of substituted furanones
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, (2008/06/13)
This invention relates to an improved process for the preparation of 3-acyl-5-alkyldihydro-2(3H)-furanones according to the following reaction scheme: STR1 wherein R and R1 are hydrogen or alkyl and R2 is a hydrocarbon or -O-hydrocarbon radical of from 1 to 20 carbon atoms and X is a leaving group.
Improved process for the preparation of substituted furanones
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, (2008/06/13)
This invention relates to an improved process for the preparation of 3-acyl-5-alkyldihydro-2(3H)-furanones according to the following reaction scheme: wherein R and R1 are hydrogen or alkyl and R2 is a hydrocarbon or -0-hydrocarbon radical of from 1 to 20 carbon atoms and X is a leaving group.
3-(2-Haloalkyl)-1,4-oxathiins and 2-(2-haloalkyl)-1,4-dithiins, and treatment of leukemia and tumors therewith
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, (2008/06/13)
Novel 3-(2-haloalkyl)-1,4-oxathiins or 2-(2-haloalkyl)-1,4-dithiins, useful for regressing or inhibiting the growth of leukemia and tumors in mammals. The compounds have the formula.: STR1 wherein R1 is an alkyl group containing up to 4 carbon atoms, cyclohexyl or phenyl; R2 is hydrogen or ethyl; R3 and R4 are each hydrogen, methyl or ethyl, and when either R3 and R4 is methyl or ethyl, the other is hydrogen; X is halogen; and Y is oxygen or sulfur and when Y is sulfur, R3 and R4 are both hydrogen. and pharmaceutical compositions comprising said compounds in admixture with a pharmaceutically acceptable substantially non-toxic carrier.
SYNTHESIS OF SINGLE ISOMERS (E OR Z) OF PROTECTED γ,δ-UNSATURATED KETONES BY THE HORNER-WITTIG REACTION
Cornish Christopher A.,Warren, Stuart
, p. 2585 - 2598 (2007/10/02)
The lithium derivative of the γ-diphenylphosphinoyl ketal (10a) added to aldehydes and ketones to give stable Horner-Wittig intermediates (11) which were separated and converted into single isomers (E or Z) or γ,δ-unsaturated ketals (12). erythro-Adducts (11) and hence Z-(12), were selectively formed by addition of aldehydes and threo adducts (11), and hence E-(12), by reduction of the corresponding α-diphenylphosphinoyl ketones (13), prepared by acylation of the same γ-diphenylphosphinoyl ketal (10a).
