[EN] CANNABINOID DERIVATIVES AND PRECURSORS, AND ASYMMETRIC SYNTHESIS FOR SAME<br/>[FR] DÉRIVÉS ET PRÉCURSEURS DE CANNABINOÏDES, ET SYNTHÈSE ASYMÉTRIQUE S'Y RAPPORTANT
申请人:KARE CHEMICAL TECH INC
公开号:WO2021046640A1
公开(公告)日:2021-03-18
The present disclosure relates to new cannabinoid derivatives and precursors and catalytic asymmetric processes for their preparation. The disclosure also relates to pharmaceutical compositions and pharmaceutical and analytical uses of the new cannabinoid derivatives. For instance, the disclosure relates to the preparation of new precursors, and the use of such precursor compounds for the preparation of isotope labelled cannabinoid products using chiral and achiral catalysts and catalytic processes. The deuterium, carbon-13 and carbon-14 containing compounds can be prepared and purified prior to transformation to the desired individual deuterated cannabinoid products.
Enantioselective bromolactonization of aryl functionalized alkenoic acids
作者:Renate Kristianslund、Trond Vidar Hansen
DOI:10.1016/j.tetlet.2020.151756
日期:2020.4
Aryl substituted 1,1-disubstituted alkenoic carboxylic acids were subjected to an enantioselective organocatalyzed protocol, yielding the corresponding δ -bromolactones in a regioselective manner. The products were isolated in good to high yields with enantiomeric excess in the range of 18 to 88%.
Practical synthesis of hex-5-ynoic acid from cyclohexanone
作者:E. K. Starostin、M. A. Lapitskaya、A. V. Ignatenko、K. K. Pivnitsky、G. I. Nikishin
DOI:10.1007/bf02499070
日期:1990.1
Enantioselective Organocatalyzed Bromolactonizations: Applications in Natural Product Synthesis
作者:Marius Aursnes、Jørn E. Tungen、Trond V. Hansen
DOI:10.1021/acs.joc.6b01375
日期:2016.9.16
The best catalyst enabled the cyclization of several 5-arylhex-5-enoic acids into the corresponding bromolactones with up to 96% ee and in high to excellent chemical yields. The reported catalysts are prepared in a straightforward manner in two steps from dimethyl squarate. The utility of the developed protocol was demonstrated in highly enantioselective syntheses of the sesquiterpenoids (−)-gossoronol
Synthesis, Biological Investigation, and Structural Revision of Sielboldianin A
作者:Renate Kristianslund、Marius Aursnes、Jørn E. Tungen、Carl H. Görbitz、Trond V. Hansen
DOI:10.1021/acs.jnatprod.8b00020
日期:2018.4.27
The two ar-bisabol sesquiterpenoids (+)-sielboldianin A (1) and (+)-sielboldianin B (2) were isolated from the stem bark of the plant Fraxinus sielboldiana and belong to a medicinally interesting class of natural products used in traditional Chinese medicine. Herein the totalsynthesis of the proposed structure of (+)-sielboldianin A (1) is reported using an organocatalyzed enantioselective bromolactonization