A synthesis of an antagonist of E-selectin previously reported by a group at Novartis Pharma in Basel is described. An important feature involves the formation of an ether linkage based on a Rh-II-catalyzed reaction. Stereocontrolled glycosylations rely on the anomeric activation of 2-pyridylthio carbonate as leaving group for the attachment of beta-D-galactopyranosyl and alpha-L-fucopyranosyl units on a common 1,5-anhydro D-glucitol scaffold.
Total Synthesis and Structural Revision of the Presumed Aeruginosins 205A and B
作者:Stephen Hanessian、Xiaotian Wang、Karolina Ersmark、Juan R. Del Valle、Ellen Klegraf
DOI:10.1021/ol901702k
日期:2009.9.17
A stereoselective synthesis of enantiopure aeruginosin 205B aglycon confirms the presence of a (3R,2S)-3-chloroleucine amide residue and a (6R)-hydroxy (4aR,7aS)-octahydroindole-(2S)-2-carboxamide (Choi) subunit instead of a 6-chloro-substituted core (Ccoi). Enzyme inhibitory tests against thrombin revealed an IC50 of 0.31 μM. The totalsynthesis of the presumed aeruginosin 205B shows that the α-d-xylopyranosyl
The present invention relates to novel triazole derivatives, to processes for preparing these compounds, to compositions comprising these compounds, and to the use thereof as biologically active compounds, especially for control of harmful microorganisms in crop protection and in the protection of materials and as plant growth regulators.
[EN] NOVEL 5-SUBSTITUTED IMIDAZOLYLMETHYL DERIVATIVES<br/>[FR] NOUVEAUX DÉRIVÉS D'IMIDAZOLYLMÉTHYLE À SUBSTITUTION EN POSITION 5
申请人:BAYER CROPSCIENCE AG
公开号:WO2018060091A1
公开(公告)日:2018-04-05
The present invention relates to novel 5-substituted imidazolylmethyl derivatives, to processes for preparing these compounds, to compositions and mixtures comprising these compounds, and to the use thereof as biologically active compounds, especially for control of harmful microorganisms in crop protection and in the protection of materials and as plant growth regulators.
[EN] TRIAZOLETHIONE DERIVATIVES<br/>[FR] DÉRIVÉS DE TRIAZOLETHIONE
申请人:BAYER AG
公开号:WO2018145933A1
公开(公告)日:2018-08-16
The present invention relates to novel triazole derivatives of formula (I-S), to processes for preparing these compounds, to compositions comprising these compounds, and to the use thereof as biologically active compounds, especially for control of harmful microorganisms in crop protection and in the protection of materials and as plant growth regulators.
[EN] TRIAZOLE DERIVATIVES, INTERMEDIATES THEREOF AND THEIR USE AS FUNGICIDES<br/>[FR] DÉRIVÉS DE TRIAZOLE, LEURS INTERMÉDIAIRES ET LEUR UTILISATION COMME FONGICIDES
申请人:BAYER CROPSCIENCE AG
公开号:WO2017029179A1
公开(公告)日:2017-02-23
The present invention relates to novel triazole derivatives, to processes for preparing these compounds, to compositions comprising these compounds, and to the use thereof as biologically active compounds, especially for control of harmful microorganisms in crop protection and in the protection of materials and as plant growth regulators.