6890-30-8Relevant articles and documents
Chemical constituents from Piper marginatum Jacq. (Piperaceae)-antifungal activities and kinetic resolution of (RS)-marginatumol by Candida antarctica lipase (Novozym 435)
Reigada, Juliana B.,Tcacenco, Celize. M.,Andrade, Leandro H.,Kato, Massuo J.,Porto, Andre L.M.,Lago, Joao Henrique G.
, p. 1054 - 1058 (2007)
The leaves of Piper marginatum contain the antifungal compounds 3,4-methylenedioxypropiophenone 1, 2-methoxy-4,5-methylenedioxypropiophenone 2, 1-(3,4-methylenedioxyphenyl)propan-1-ol 3 (marginatumol), 5,4′-dihydroxy-7-methoxyflavanone 4 and 5,7-dihydroxy-4′-methoxyflavanone 5. The absolute configuration of natural marginatumol was determined as (+)-(R)-3 (ee 48%) by comparison of its optical properties with the chiral forms obtained by kinetic resolution of racemic 3 using Candida antarctica lipase (Novozym 435).
AN EFFICIENT PROCESS FOR PREPARATION OF ACYL DERIVATIVES OF ALKYLENEDIOXYBENZENES
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Paragraph 0093, (2021/08/20)
The present disclosure provides a process of preparation of compounds of Formula I comprising the step of : reacting an alkylenedioxybenzene compound of Formula II with an acyl halide of Formula III in presence of a solvent, wherein the step of reacting the alkylenedioxybenzene compound of Formula II with the acyl halide of Formula III is effected in presence of an amphoteric oxide and a Lewis acid so as to immediately quench the compound of formula H-X, formed during the course of the reaction, to substantially eliminate degradation of the compound of any of Formula I and II. The present disclosure also provides for process(es) for preparation of compound of Formula IVa, IVb and IVc.
A PROCESS FOR PREPARATION OF ALKENYL AND ALKYL DERIVATIVES OF ALKYLENEDIOXYBENZENE
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Paragraph 0059; 0075-0076, (2018/09/12)
The present disclosure generally relates to the method of preparation of compounds of Formula IV. An aspect of the present disclosure relates to a process for preparation of compound of Formula IV, said process comprising the step of reacting an alkylenedioxybenzene compound of Formula II with an acyl halide of Formula III in presence of a solvent, characterized in that the step of reacting the alkylenedioxybenzene compound of Formula II with the acyl halide of Formula III is effected in the presence of an amphoteric oxide so as to in-situ quench the compound of formula H-X formed during the course of the reaction, thereby substantially eliminating degradation of the compounds of Formula IV and Formula II.