152786-08-8Relevant articles and documents
METHOD FOR SYNTHESIZING SAPROPTERIN DIHYDROCHLORIDE
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, (2015/03/03)
Disclosed is a method for synthesizing sapropterin dihydrochloride. The present invention reduces a synthesis route of the sapropterin dihydrochloride, and resolves a racemate intermediate or an intermediate having a low antimer isomerism value by using a chiral resolving reagent, thereby obtaining an intermediate having a high antimer isomerism value. Raw materials are cheap and readily available, and the cost is significantly reduced, hence providing an effective scheme for mass industrial production of the sapropterin dihydrochloride.
METHOD FOR SYNTHESIZING SAPROPTERIN DIHYDROCHLORIDE
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Paragraph 0070; 0071, (2015/05/05)
Disclosed is a method for synthesizing sapropterin dihydrochloride. The present disclosure reduces a synthesis route of the sapropterin dihydrochloride, and resolves a racemate intermediate or an intermediate having a low antimer isomerism value by using a chiral resolving reagent, thereby obtaining an intermediate having a high antimer isomerism value. Raw materials are cheap and readily available, and the cost is significantly reduced, hence providing an effective scheme for mass industrial production of the sapropterin dihydrochloride.
METHOD FOR SYNTHESIZING SAPROPTERIN DIHYDROCHLORIDE
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Paragraph 0053, (2015/04/22)
Disclosed is a method for synthesizing sapropterin dihydrochloride. The present disclosure reduces a synthesis route of the sapropterin dihydrochloride, introduces a chiral center in an asymmetric synthesis manner, in which a tetrahydrofuran solution containing a samarium catalyst is adopted as a catalyst, and obtains a target compound having a high antimer isomerism value by means of selective catalysis. The yield is improved, raw materials are cheap and readily available, and the cost is significantly reduced, hence providing an effective scheme for mass industrial production of the sapropterin dihydrochloride.
METHOD FOR SYNTHESIZING SAPROPTERIN DIHYDROCHLORIDE
-
, (2015/03/03)
Disclosed is a method for synthesizing sapropterin dihydrochloride. The present invention reduces a synthesis route of the sapropterin dihydrochloride, introduces a chiral center in an asymmetric synthesis manner, in which a tetrahydrofuran solution containing a samarium catalyst is adopted as a catalyst, and obtains a target compound having a high antimer isomerism value by means of selective catalysis. The yield is improved, raw materials are cheap and readily available, and the cost is significantly reduced, hence providing an effective scheme for mass industrial production of the sapropterin dihydrochloride.
Total synthesis of (-)-Jiadifenin
Yang, Yang,Fu, Xingnian,Chen, Jianwei,Zhai, Hongbin
supporting information, p. 9825 - 9828 (2012/10/29)
As easy as ABCD: (-)-Jiadifenin was synthesized in eighteen reaction steps from 1-[(E)-(4′-bromo-2′-butenyl)oxy]-4-methoxybenzene. Key features of this synthesis include: 1) Ireland-Claisen rearrangement to produce the two contiguous quaternary centers at
Scalable synthesis of enantiomerically pure syn -2,3-dihydroxybutyrate by sharpless asymmetric dihydroxylation of p -phenylbenzyl crotonate
Smaltz, Daniel J.,Myers, Andrew G.
experimental part, p. 8554 - 8559 (2011/12/03)
An efficient four-step synthetic route to the useful chiral building block (2R,3S)-dihydroxybutyric acid acetonide in >95% ee is detailed. The sequence is readily scaled, requires no chromatography, and allows for efficient recycling of p-phenylbenzyl alcohol, an expedient for enantio- and diastereoenrichment by recrystallization.
NITROGEN-CONTAINING HETEROCYCLIC COMPOUND AND PHARMACEUTICAL APPLICATION THEREOF
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Page/Page column 77, (2010/11/26)
It is intended to provide a compound represented by the general formula (I): (I) (wherein all the symbols are as defined in the description) which has a p38 MAP kinase inhibitory activity, a salt thereof, an N-oxide thereof, a solvate thereof, or a prodrug thereof. The compound of the invention is useful for preventing or treating a disease in which the abnormal production of a cytokine such as an inflammatory cytokine or a chemokine or overreaction to them is considered to be involved in the cause and aggravation of pathological conditions, in other words, an inflammatory disease, a respiratory disease, a cardiovascular disease, a central nervous system disease or the like, which is a cytokine-mediated disease.
A Selective Baeyer-Villiger Oxidation: A Total Synthesis of (-)-Acetomycin
Ziegler, Frederick E.,Kim, Hakwon
, p. 7669 - 7672 (2007/10/02)
A short, stereoselective synthesis of (-)-acetomycin (2) from L-threonine is reported.The final step in the synthesis is a selective Baeyer-Villiger oxidation that discriminates between two methyl ketones.
ENZYMATIC ENANTIOSELECTIVE HYDROLYSIS OF 2,2-DIMETHYL-1,3-DIOXOLANE-4-CARBOXYLIC ESTERS
Pottie, M.,Eycken, J. Van der,Vandewalle, M.,Dewanckele, J. M.,Roeper, H.
, p. 5319 - 5322 (2007/10/02)
2,2-dimethyl-1,3-dioxolane-4-carboxylic acid derived chiral building blocks were prepared from substituted α,β-unsaturated acids with high enantiomeric purities by enzymatic hydrolysis of their n.butyl esters.
Synthesis of (-)-Biopterin Using (S)-Ethyl Lactate as a Starting Material
Kikuchi, Haruhiko,Mori, Kenji
, p. 2095 - 2100 (2007/10/02)
(-)-Biopterin was synthesized from (1S,2S)-1-(1,3-dithian-2-yl)propane-1,2-diol 5 (=C), which was derived from commercially available (S)-ethyl lactate.Diol 5 (=C) was converted to 15 through a six-step sequence.Ketone 15 was submitted to condensation with 3,5,6-triaminopyrimidinol (TAP, 2), and followed by oxidation to afford isopropylidenebiopterin (16).Finally, 16 was deprotected to give (-)-biopterin (1).