Diastereoselective epoxidation of olefins by organo sulfonic peracids, II
作者:R. Kluge、M. Schulz、S. Liebsch
DOI:10.1016/0040-4020(95)01128-5
日期:1996.2
have investigated the behaviour of sulfonic peracids 2in situ generated towards olefins 7a,7b,9,11,14,16,18, allylic and homoallylic alcohols 20,22,24,26,28,30,33 and α,β-unsaturated ketones 35,37,39. Generally, the epoxidation proceeds in a peracid-like manner with greater diastereoselectivity than those by common oxidants. In particular, the epoxidation of Δ4 3-ketosteroids 39a-i led to 4α,5α-epoxides
Antiviral Activity of 3-methyl-6-(prop-1-en-2-yl)cyclohex-3-ene-1,2-diol and its Derivatives Against Influenza A(H1N1)2009 Virus
作者:Oleg V. Ardashov、Vladimir V. Zarubaev、Anna A. Shtro、Dina V. Korchagina、Konstantin P. Volcho、Nariman F. Salakhutdinov、Oleg I. Kiselev
DOI:10.2174/157018011794839411
日期:2011.5.1
A number of new derivatives of monoterpenoid with a para-menthane framework 3-methyl-6-(prop-1-en-2- yl)cyclohex-3-ene-1,2-diol (-)-3 were synthesized. The antiviral activity of (-)-3 and its derivatives against the pandemic influenza virus A/California/07/09 (H1N1)v was studied in vitro. Compound (-)-3 was found to be active against this vi- rus (selectivity index 7.5); for mononicotinate (+)-6 the
2-(3(4)-Hydroxy-4(3)-methoxyphenyl)-4,7-dimethyl-3,4,4a,5,8,8a-hexahydro-2H-chromene-4,8-diols were found recently to possess high analgesic activity and low acute toxicity. Stereoisomers of these compounds with high optical purity were synthesized from (+)- and (−)-α-pinenes for the first time in this work. The structure of (4S)-4b isomer was confirmed by the XRD data. Studies of analgesic activity
Synthesis of Optically Active, Cyclicα-Hydroxy Ketones and 1,2-Diketones from Verbenone Epoxide
作者:Irina V. Il'ina、Konstantin P. Volcho、Dina V. Korchagina、Vladimir A. Barkhash、Nariman F. Salakhutdinov
DOI:10.1002/hlca.200690052
日期:2006.3
The reactivity of verbenone epoxide (5), a terpenoid from the pinane series, towards different aliphatic and aromatic aldehydes in the presence of natural montmorillonite (askanite–bentonite) clay has been studied. A series of mechanistically different transformations afforded a number of new, opticallyactive, polyfunctional compounds (7, 8, 10–14, 16). These products are potentially interesting synthons
Analogues ofα-Campholenal (= (1R)-2,2,3-Trimethylcyclopent-3-ene-1-acetaldehyde) as Building Blocks for (+)-β-Necrodol (= (1S,3S)-2,2,3-Trimethyl-4-methylenecyclopentanemethanol) and Sandalwood-like Alcohols
relationships (SARs) of sandalwood-like alcohols derived from analogues of α-campholenal (= (1R)-2,2,3-trimethylcyclopent-3-ene-1-acetaldehyde), we isomerized the epoxy-isopropyl-apopinene (−)-2d to the corresponding unreported α-campholenal analogue (+)-4d (Scheme 1). Derived from the known 3-demethyl-α-campholenal (+)-4a, we prepared the saturated analogue (+)-5a by hydrogenation, while the heterocyclic aldehyde