71155-07-2Relevant academic research and scientific papers
The optically pure sodium alcoholate dextrorotary chlorine forefront of the method for the preparation of
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Paragraph 0073; 0077-0079; 0143, (2018/02/04)
The invention relates to a preparation method of optically pure dextro cloprostenol sodium. The method comprises the following steps: using the combination of ketonic acid and S-phenylethylamine resolving agent, and carrying out chiral resolution to obtain S-propenylphosphonate with the structural formula of R-ketonic acid; then separating to obtain R-chlorone and preparing to obtain R-cloprostenol sodium. The preparation method has the benefits that the optically pure dextro cloprostenol sodium in the invention is called D-cloprostenol sodium for short, the using amount only needs one third of cloprostenol sodium being a racemic modification in current market, and the pesticide effect is obviously better than cloprostenol sodium with three times of using amount.
Synthesis of Biologically Active Analogue of Prostaglandin E2 (Racemate and Enantiomerically Pure Compounds)
Bartmann, Wilhelm,Beck, Gerhard,Jaehne, Gerhard,Lerch, Ulrich,Wess, Guenther
, p. 321 - 326 (2007/10/02)
Transformation of 6-chloro-3-oxo-2-oxabicyclooctane-8-carbaldehyde (6) by an eight-step synthesis leads to racemic (5Z,13E)-11,15-dihydroxy-16,16-dimethyl-9-oxo-18-oxa-5,13-prostadienoic acid (1) (dimoxaprost).The synthesis starts with the introduction of the ω-side chain of 1 into 6 by Horner-Emmons-Wittig reaction with the phosphonate 7.Ring cleavage and rearrangement of 8 affords enone 9a with unprotected hydroxyl group.By stereoselective reduction of 9a, diol 11a is obtained.Subsequently, 11a is converted in five steps through the "Corey synthesis into 1.The 5-ketoprostacyclin 17 is isolated as byproduct of the Jones oxidation of 15.Finally, the synthesis of optically pure (-)-1 and (+)-1, starting with the keto acids (+)-2 and (-)-2, is described.
ABSOLUTE CONFIGURATION OF (1R,2S,4R,6S,7R)-(+)-3-OXOTRICYCLO2,6>HEPTANE-7-CARBOXYLIC ACID
Cervinka, Otakar,Habartova, Eliska
, p. 3565 - 3566 (2007/10/02)
The title acid was assigned absolute configuration on the basis of stereoselective condensation with optically active amines.
Fluoroprostaglandins: Synthesis and Biological Evaluation of the Methyl Esters of (+)-12-Fluoro-, (-)-ent-12-Fluoro-, (+)-15-epi-Fluoro-, and (-)-ent-15-epi-12-Fluoroprostaglandin F2α
Grieco, Paul A.,Owens, William,Wang, C.-L. J.,Williams, Eric,Schillinger, William J.,et al.
, p. 1072 - 1077 (2007/10/02)
The synthesis and biological activity of the methyl esters of (+)-12-fluoroPGF2α, (+)-15-epi-12-fluoroPGF2α, (-)-ent-12-fluoroPGF2α, and (-)-15-epi-12-fluoroPGF2α are described.Each fluoroprostaglandin has been evaluated from pregnancy interruption in the hamster and smooth-muscle stimulating effects on gerbil colon and hamster uterine strips.All fluoroprostaglandins synthesized were shown to be neither substrates for 15-hydroxyprostaglandin dehydrogenase nor inhibitors of the enzyme.
