Process for the production of alkanediol derivative
申请人:Ihara Chemical Industry Co., Ltd.
公开号:US06720463B1
公开(公告)日:2004-04-13
The present invention provides a process for producing an alkanediol derivative represented by the general formula (II) from an ester compound represented by the general formula (I), safely without giving rise to racemization.
The present invention lies in a process for producing an alcohol derivative represented by the following general formula (II):
(wherein R2 and R3 are each independently a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; X is a hydrogen atom or a protecting group for hydroxyl group; and n is 0 or 1), which process comprises reducing an ester compound represented by the following general formula (I):
(wherein R1 is an alkyl group having 1 to 4 carbon atoms; and R2, R3, X and n have the same definitions as given above) with sodium borohydride in a mixed solvent of at least one kind of solvent selected from the group consisting of aromatic hydrocarbons, aliphatic hydrocarbons and alicyclic hydrocarbons and a primary alcohol.
Complementary diastereoselectivity in the intermolecular addition of titanium and magnesium naphtholates to asymmetric lactaldehydes
作者:Robin G. F. Giles、Cynthia A. Joll、Melvyn V. Sargent、D. Matthew G. Tilbrook
DOI:10.1039/a901456j
日期:——
S)-2-(1′-ethoxyethoxy)propanal 4 afforded solely (1S, 2R, 1″R or S)-1-(7′-benzyloxy-4′,5′-dimethoxy-1′-hydroxy-2′-naphthyl)-2-(1″-ethoxyethoxy)propan-1-ol 5, being the erythro product arising from anti addition. Complementary reaction of the naphthol 3 as its bromomagnesium naphtholate with aldehyde 4 gave rise solely to the alternative (1R, 2R, 1″R or S) diastereomer 6 . The naphthol 3 was prepared through the completely
Synthesis and Antiretroviral Evaluation of New Alkoxy and Aryloxy Phosphate Derivatives of 3‘-Azido-3‘-deoxythymidine
作者:Andrew Tsotinis、Theodora Calogeropoulou、Maria Koufaki、Charikleia Souli、Jan Balzarini、Erik De Clercq、Alexandros Makriyannis
DOI:10.1021/jm950777g
日期:1996.1.1
results of the biological tests indicate that analogs with a methyl group alpha to the phosphate moiety (11c,d) exhibit a marked degree of stereoselectivity with regard to their anti-HIV activity. Also, replacement of the long alkyl chain with aromatic groups in the oxyalkyl ether phospholipid-AZT conjugates leads to substantially more potent compounds (11e-g) with an anti-HIV activity comparable to that