Stereoselective Synthesis of Rubrenoic and nor‐Rubrenoic acids
摘要:
The total stereoselective synthesis of (Z)-rubrenoic I (1a), (Z)-nor-rubrenoic I (17a), (E)-rubrenoic III (3b), and nor-(E)-rubrenoic III (30b) acids was achieved using Suzuki and Stille cross-coupling reactions from readily available starting materials.
Stereoselective Synthesis of Rubrenoic and nor‐Rubrenoic acids
摘要:
The total stereoselective synthesis of (Z)-rubrenoic I (1a), (Z)-nor-rubrenoic I (17a), (E)-rubrenoic III (3b), and nor-(E)-rubrenoic III (30b) acids was achieved using Suzuki and Stille cross-coupling reactions from readily available starting materials.
METHOD FOR PRODUCING HIGH PURITY TERMINAL OLEFIN COMPOUND
申请人:Miyoshi Kei
公开号:US20120029229A1
公开(公告)日:2012-02-02
An industrially advantageous method for producing a high purity terminal olefin is disclosed, comprising the steps of (a) contacting a mixture comprising a terminal olefin represented by formula (1):
and one or more corresponding internal olefins as impurities, with a brominating agent in the presence of water or an alcohol, to convert the internal olefin(s) to compound(s) having a higher boiling point than the terminal olefin; and (b) purifying the terminal olefin by distillation from the reaction mixture.
METHOD FOR PRODUCING HIGH-PURITY TERMINAL OLEFIN COMPOUND
申请人:Kuraray Co., Ltd.
公开号:EP2415740A1
公开(公告)日:2012-02-08
PROBLEM
There is provided an industrially advantageous means to obtain a high purity terminal olefin compound (for example, 7-octenal).
SOLUTION
The method for producing a high purity terminal olefin compound of the present invention comprises a step where a mixture containing a terminal olefin compound represented by the following chemical formula 1:
and a corresponding internal olefin compound as an impurity is brought into contact with a brominating agent in the presence of water or an alcohol, to convert the aforementioned internal olefin compound to a compound having a higher boiling point; and a step where the aforementioned terminal olefin compound is purified by distillation from the mixture obtained in the aforementioned step.
The compounds of the present invention are non-immunosupressive cyclosporine analogue molecules that are able to bind cyclophilin. Said compounds include a modified side chain of amino acid I of cyclosporin A, consisting of an oxyalkyl having substituents R′, R1 and R2, where R′ is H or Acetyl; R1 is a saturated or unsaturated straight chain or branched aliphatic carbon chain; and R2 may be a hydrogen; a unsubstituted, N substituted or NN disubstituted amide; a N substituted or unsubstituted acyl protected amine; a carboxylic acid; a N substituted or unsubstituted amine; a nitrile; a ester; a ketone; a hydroxy, dihydroxy, trihydroxy or polyhydroxy alkyl; or a substituted or unsubstituted aryl.
CYCLOSPORINE ANALOGUE MOLECULES MODIFIED AT AMINO ACID 1 AND 3
申请人:Hegmans Alexander
公开号:US20140142033A1
公开(公告)日:2014-05-22
Analogues of cyclosporin-A are disclosed comprising modifications of the substituents as the positions of amino acids 1 and 3, according to the following Formula. The disclosed compounds include compounds having affinity for cyclophilin, including cyclophilin-A, and reduced immunosuppressivity in comparison with cyclosporin-A and analogs thereof modified solely at position 1.
Cyclosporine Analogue Molecules Modified At Amino Acid 1 and 3
申请人:Ciclofilin Pharmaceuticals Corp.
公开号:US20160207961A1
公开(公告)日:2016-07-21
Analogues of cyclosporin-A are disclosed comprising modifications of the substituents as the positions of amino acids 1 and 3, according to the following Formula. The disclosed compounds include compounds having affinity for cyclophilin, including cyclophilin-A, and reduced immunosuppressivity in comparison with cyclosporin-A and analogs thereof modified solely at position 1.