Abstract:
The present invention provides desosamine and mycaminose analogs and nitro sugars and methods for their preparation. The invention also provides methods of cyclizing a compound of Formula (Α') with glyoxal to give a nitro sugar of Formula (B). Methods for the preparation of compound of Formula (D') are provided comprising cyclization of a nitro alcohol to give a nitro sugar and reduction and alkylation of the nitro sugar to give a desosamine, mycaminose, or an analog thereof.
Abstract:
The present invention provides a halogenated aniline represented by formula (I) (wherein each of X 1 and X 2 independently represents a chlorine atom, a bromine atom or an iodine atom), a method for producing the halogenated aniline, and other aspects.
Abstract:
Disclosed is a process for preparing dihydro-2H-pyran derivatives of formula I: wherein R 1 and R 2 are defined herein. The process of the invention provides the compound of formula I in concise cascade reactions and in one pot. The compound of formulae I prepared by the process of the invention and its further transformed derivatives are useful for making pharmaceutical composition for the treatment of proliferative diseases.
Abstract:
Man erhält a-Fluornitroalkane der allgemeinen Formel in welcher
R 1 , R 2 , R 3 und R 4 gleich oder verschieden sind und einzeln für Wasserstoff, Fluor, Chlor, Brom, Alkyl, Halogenalkyl oder Cycloalkyl stehen oder R 1 und R 3 die angegebene Bedeutung haben und R 2 und R 4 gemeinsam für eine Alkylengruppe mit 3 - 6 C-Atomen stehen, durch konjugierte Nitrofluorierung der entsprechenden Olefine in guten Ausbeuten, indem man die Umsetzung in Gegenwart eines wasserbindenden Mittels durchführt, wobei übliche Stahlapparaturen verwendet werden können.
Die α-Fluornitroalkane (I) können als Zwischenprodukte, z.B. zur Herstellung von fluorhaltigen herbiziden Wirkstoffen aus der Reihe der sym.-Triazine, verwendet werden.
Abstract:
The present invention provides a halogenated aniline represented by formula (I) (wherein each of X1 and X2 independently represents a chlorine atom, a bromine atom or an iodine atom), a method for producing the halogenated aniline, and other aspects.