73149-51-6Relevant academic research and scientific papers
Lignans from Piper cubeba
R. Prabhu, Bharathi,B. Mulchandani, Newand
, p. 329 - 331 (1985)
From the hot petrol extract of Piper cubeba ftuits, six lignans were isolated. Two of these, which have been obtained from a natural source for the first time, have been characterized as (2R,3R)-2-(3″,4″,5″-trimethoxybenzyl)-3-(3′,4′-methylenedioxybenzyl)-1,4-butanediol [(-)-dihydroclusin] and (3R,4R)-3,4-bis-(3,4,5-trimethoxybenzyl)tetra-hydro-2-furanol [(-)-cubebinin]. (-)Cubebin, (-)-hinokinin, (-)-clusin and (-)-dihydrocubebin were also found in this plant. Only (-)-cubebin has been reported so far from this source.
Asymmetric Synthesis of Lignans of the Dibenzylbutanediol and Tetrahydrodibenzocyclooctene Series
Pelter, Andrew,Ward, Robert S.,Jones, Martin D.,Maddocks, Peter
, p. 2631 - 2638 (2007/10/02)
Enolate anions obtained by conjugate addition to (-)-5-(1-menthyloxy)furan-2(5H)-one are quenched with benzyl bromides or iodides to yield homochiral dibenzylbutyrolactones.Desufurisation followed by lithium aluminium hydride reduction affords homochiral
Asymmetric Syntheses of Lignans of the Dibenzylbutyrolactone, Dibenzylbutanediol, Aryltetralin and Dibenzocyclooctadiene Series
Pelter, Andrew,Ward, Robert S.,Jones, D. Martin,Maddocks, Peter
, p. 239 - 242 (2007/10/02)
General procedures are outlined for the asymmetric syntheses of ligands of the dibenzylbutyrolactone, dibenzylbutanediol, aryltetralin and dibenzocyclooctadiene series, from tandem addition products derived from 4-mentyloxybutenolide.
A KEY INTERMEDIATE FOR THE SYNTHESIS OF ANTITUMOR LIGNAN PROTOTYPES
Belletire, J. L.,Fremont, S. L.,Fry, D. F.
, p. 699 - 710 (2007/10/02)
Procedures are described for the convenient generation of an iodinated carboxylic acid possessing considerable utility as a precursor to several biologically active lignans.
A SIMPLE PREPARATION OF (R)-(+)-β-(3,4,5-TRIMETHOXYBENZYL)-BUTANOLIDE, AND ITS USE IN THE TOTAL SYNTHESES OF NATURALLY OCCURRING DIBENZYLBUTANOLIDE LIGNANS
Lalami, Khalid,Dhal, Robert,Brown, Eric
, p. 1131 - 1134 (2007/10/02)
Resolution of methyl α-(3,4,5-trimethoxybenzyl)hemisuccinate by means of (-)-ephedrine, followed by calcium borohydride reduction, afforded (R)-(+)-β-(3,4,5-trimethoxybenzyl)butanolide.This lactone was used as a starting material for the optically active
THE STRUCTURE OF YATEIN. DETERMINATION OF THE POSITIONS, AND CONFIGURATIONS OF BENZYL GROUPS IN LIGNANS OF THE 2,3-DIBENZYLBUTYROLACTONE TYPE
Harmatha, Juraj,Budesinsky, Milos,Trka, Antonin
, p. 644 - 663 (2007/10/02)
The structure of yatein isolated from Libocedrus yateensis has been determined as (2R,3R)-2-(3,4,5-trimethoxybenzyl)-3-(3,4-methylenedioxybenzyl)butyrolactone (Ia).The assignment of individual signals of the 1H NMR spectrum of yatein and further lignans o
