GARCINIA DERIVATIVE, ITS PREPARING METHOD AND MEDICINAL USE
申请人:You Qidong
公开号:US20120059050A1
公开(公告)日:2012-03-08
The present invention relates to a field of pharmaceutical chemistry, more specifically, the present invention relates to a garcinia derivative Formula (I), its preparing method, and medicinal use. Wherein the definitions of R
1
and R
2
are disclosed in the specification of the present invention, and the derivative of the present invention is a structurally simplified analogue of the gambogic acid compound; wherein the gambogic acid compound possesses anti-cancer characteristics, and could be used for preparation of anti-tumor drugs.
Processes for producing cis alkyl-2-methyl-3-pentenoates and isomer
申请人:International Flavors & Fragrances Inc.
公开号:US03931293A1
公开(公告)日:1976-01-06
Methods for producing cis-alkyl-2-methyl-3-pentenoates and isomeric mixtures containing high proportions (greater than 50%) of cis C.sub.2 -C.sub.6 alkyl-2-methyl-3-pentenoates.
Process for producing isomer mixtures containing high proportions of
申请人:International Flavors & Fragrances Inc.
公开号:US03931306A1
公开(公告)日:1976-01-06
A method for producing mixtures containing greater than 50% cis 2-methyl-3-pentenoic acid comprising first reacting methyl acetylene with a methyl magnesium halide to form a methylacetylene magnesium halide Grignard reagent; then reacting the methyl acetylene magnesium halide Grignard reagent with acetaldehyde to form a 3-pentyn-2-ol magnesium halide salt; then hydrolyzing the magnesium halide salt to form 3-pentyn-2-ol; then halogenating the 3-pentyn-2-ol to form a 4-halo-2-pentyne; then reacting magnesium with the 4-halo-2-pentyne to produce a 4-magnesium halo-2-pentyne Grignard reagent; then reacting the 4-magnesium halo-2-pentyne Grignard reagent with carbon dioxide to form a magnesium halo-carboxylate salt mixture of compounds having the structures: ##EQU1## (wherein X is halogen); then hydrolyzing the magnesium halo-carboxylate salt mixture to form a mixture of carboxylic acids having the structures: ##EQU2## then hydrogenating the aforementioned mixture of carboxylic acids to form a mixture containing 80% cis-2-methyl-3-pentenoic acid and 20% of 2-methyl-2-pentenoic acid.
GAMBOGIC ACID DERIVATIVES, PREPARATIVE METHODS AND USES THEREOF
申请人:China Pharmaceutical University
公开号:EP2494971A1
公开(公告)日:2012-09-05
The present invention relates to a field of pharmaceutical chemistry, more specifically, the present invention relates to a garcinia derivative Formula (I), its preparing method, and medicinal use. Wherein the definitions of R1 and R2 are disclosed in the specification of the present invention, and the derivative of the present invention is a structurally simplified analogue of the gambogic acid compound; wherein the gambogic acid compound possesses anti-cancer characteristics, and could be used for preparation of anti-tumor drugs.