- Method for preparing 3-fluorooxetane-3-methanol and intermediate of 3-fluorooxetane-3-methanol
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The invention discloses a method for preparing 3-fluorooxetane-3-methanol and an intermediate of 3-fluorooxetane-3-methanol. The method comprises the following steps of: performing a cyclization reaction on a compound represented by a formula 5 and strong base in organic solvent so as to obtain a compound represented by a formula 6, wherein R1 is a methylsulfonyl group or a p-methylphenylsulfonylgroup or a p-trifluoromethylbenzenesulfonyl group or a trifluoromethylsulfonyl group; preforming a reaction on magnesium and the compound represented by the formula 6 in organic solvent so as to obtain a compound 7. The method has the advantages of being high in yield, simple to operate and simple in post-treatment, and is suitable for large-scale production.
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Paragraph 0102; 0103; 0114; 0115
(2018/03/25)
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- HYDROXYL PURINE COMPOUNDS AND USE THEREOF
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Disclosed are a series of hydroxyl purine compounds and the use thereof as PDE2 or TNFα inhibitors, in particular, the compounds as shown in formula (I), or tautomers or pharmaceutically acceptable salts thereof.
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Paragraph 0069; 0077
(2018/06/09)
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- ANTIFIBROTIC EFFECTS OF OXETANYL SULFOXIDES
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A compound, or a pharmaceutically acceptable salt thereof, having a structure of wherein Z is aryl or substituted aryl, heteroaryl, or substituted heteroaryl; X is —S—, —S(O)—, or S(O)2—; R20 and R21 are each independently H, alkyl, substituted alkyl, alkenyl, substituted alkenyl, alkynyl, substituted alkynyl, aryl, substituted aryl, or halogenated alkyl; one of R22, R23, and R24 is —O— and the others of R22, R23 and R24 are independently —CH2—, or —C(R13)— wherein R13 is alkyl, alkenyl, alkynyl, trialkylsilyl group, or —(CH2)mOR15, wherein R15 is alkyl or an aryl and m is an integer in the range of 1 to 10; and R25 is H, alkyl, substituted alkyl, halogen, alkenyl, substituted alkenyl, alkynyl, substituted alkynyl, aryl, substituted aryl, heteroaryl, substituted heteroaryl, C1-C3 alkoxy, aryloxy, or —(CH2)qOR17, wherein R17 is alkyl an aryl and q is an integer in the range of 1 to 10.
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Paragraph 0163
(2017/07/28)
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- A new and versatile synthesis of 3-substituted oxetan-3-yl methyl alcohols
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We have developed a novel route for the efficient synthesis of pharmaceutically significant 3-substituted oxetan-3-yl methyl alcohols starting from readily available malonates. The synthesis harnesses the diversity of malonate chemistry and allows access to a range of oxetanes, which exemplifies the versatility of this procedure.
- Boyd, Scott,Davies, Christopher D.
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supporting information
p. 4117 - 4119
(2014/07/22)
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- A new and versatile synthesis of 3-substituted oxetan-3-yl methyl alcohols
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We have developed a novel route for the efficient synthesis of pharmaceutically significant 3-substituted oxetan-3-yl methyl alcohols starting from readily available malonates. The synthesis harnesses the diversity of malonate chemistry and allows access to a range of oxetanes, which exemplifies the versatility of this procedure.
- Boyd, Scott,Davies, Christopher D.
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supporting information
p. 4117 - 4119
(2015/02/19)
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- NOVEL PYRROLIDINE-3,4-DICARBOXAMIDE DERIVATIVES
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The invention is concerned with novel pyrrolidine-3,4-dicarboxamide derivatives of Formula (I) ; wherein Rl to R9 and X are as defined in the description and in the claims, as well as physiologically acceptable salts thereof. These c
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Page/Page column 53
(2008/06/13)
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