91599-79-0Relevant articles and documents
Preparation method of piperidine alcohol compound
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Paragraph 0024-0036, (2021/10/05)
Discloses a preparation method of a piperidinol compound, wherein the piperidinol is selected from (R)-1 - benzyl -3 - piperidinol. 1 -benzyl -3 - piperidone as reaction raw material and application thereof LiAlH4 A chiral reagent formed by the
A Bruton tyrosine kinase (Btk) method for the preparation of
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Paragraph 0005; 0006; 0017; 0018, (2017/07/31)
The invention relates to a preparation method of a Bruton's tyrosine kinase (Btk) intermediate (VI). The method comprises the following steps: carrying out benzylamine ring opening on a compound (S)-(+)-5-substituted-2-tetrahydrofurancarboxylic acid to obtain a product, and reacting the product with acyl chloride or acid anhydride to obtain a compound II; reducing the compound II, carrying out salt formation on the reduced compound II by using 1R-(-)-camphorsulfonic acid, and degrading the obtained salt to obtain a compound III; and reducing the compound III, carrying out salt formation on the reduced compound III and AcOH to obtain a compound V, and carrying out Boc addition on the compound V under an alkaline condition to obtain the target compound VI.
Chiral-1-tert-butoxy-carbonyl-3-hydroxy-piperidine, and the preparation of chiral turning method
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Paragraph 0100-0102, (2016/12/01)
The invention relates to preparation of chirality-1-t-butyloxycarboryl-3-hydroxy piperidine and a method for chirality turning. The preparation mainly comprises the following steps: resolving N-benzyl-3-hydroxy piperidine as a raw material to obtain a (S) or (R)-1-benzyl-3-hydroxy piperidine camphorsulfonic acid salt, performing alkali freedom to obtain (S) or (R)-1-benzyl-3-hydroxy piperidine, performing palladium carbon hydrogenation debenzylation/t-butyloxycarboryl protection to obtain (S) or (R)-1-t-butyloxycarboryl-3-hydroxy piperidine, acylating substituting sulfonyl chloride of (R) or (S)-1-substituting-3-hydroxy piperidine as a raw material to obtain (R) or (S)-1-substituting-3-hydroxy piperidine sulfonate, substituting by using substituting carboxylate to obtain (S) or (R)-1-substituting-3-hydroxy piperidine carboxylic ester, and performing alkaline hydrolysis to obtain (S) or (R)-1-substituting-3-hydroxy piperidine. The synthesis route is gentle in reaction condition, and is applicable to industrial large-scale production.