[EN] A PROCESS FOR THE PREPARATION OF VANILLIN AND OTHER SUBSTITUTED PHENYLALDEHYDES<br/>[FR] PROCÉDÉ DE PRÉPARATION DE VANILLINE ET D'AUTRES PHÉNYLALDÉHYDES SUBSTITUÉS
申请人:COUNCIL OF SCIENT AND INDUSTRIAL RESEARCH AN INDIAN REGISTERED BODY INCORPORATED UNDER THE REGN OF S
公开号:WO2022003710A1
公开(公告)日:2022-01-06
The present invention relates to a chemical process for the production of substituted phenylaldehydes such as vanillin (1a) from substituted phenylpropenes or substituted phenylpropenes enriched essential oils such as eugenol (2a) or eugenol rich essential oils indiscriminately through either cis or trans or a mixture of cis and trans isomer(s) of substituted phenylprop-2-enes such as isoeugenol, an intermediate compound. The invention relates to the conversion of substituted phenylpropenes to other substituted phenylaldehydes, particularly vanillin without the protection of the phenolic group, therefore, it offers a step economy. The present chemical process involves the use of class 3 and 4 solvents thereby devoid of the use of any chlorinated solvent.
[EN] METHODS FOR PREPARING HYPERICIN<br/>[FR] PROCÉDÉS DE FABRICATION DE L'HYPÉRICINE
申请人:HY BIOPHARMA INC
公开号:WO2011034922A1
公开(公告)日:2011-03-24
The present invention provides a method for making hypericin comprising the steps of converting a protohypericin to a protohypericin salt, and irradiating the protohypericin salt with visible light to form hypericin. The present invention also provides an apparatus comprising a transparent column having a top end and a bottom end, an inlet attached to the column at the top end to flow reactants into the column, a container attached to the column at the bottom end; and a visible light source positioned to cast light on to the column. The present invention further provides a method for making hypericin using said apparatus.
PROCESS FOR THE NITRATION OF O-XYLENE AND RELATED COMPOUNDS
申请人:Corbin David Richard
公开号:US20110054219A1
公开(公告)日:2011-03-03
Aromatic compounds such as o-xylene are selectively nitrated by nitric acid in the presence of polyphosphoric acid and a large pore, acidic zeolite or a large pore, hydrophobic molecular sieve. This is an environmentally friendly, commercially viable, high conversion process for the selective nitration of aromatic compounds in the para position.
The present invention provides a method for making hypericin comprising the steps of converting a protohypericin to a protohypericin salt, and irradiating the protohypericin salt with visible light to form hypericin. The present invention also provides an apparatus comprising a transparent column having a top end and a bottom end, an inlet attached to the column at the top end to flow reactants into the column, a container attached to the column at the bottom end; and a visible light source positioned to cast light on to the column. The present invention further provides a method for making hypericin using said apparatus.
Novel compounds of Formula (I) or pharmaceutically acceptable salts thereof, metabolites thereof, isomers thereof, enantiomers thereof or prodrugs thereof of Formula (I)
wherein the substituents are as defined herein, which are useful as therapeutic agents.