[EN] PROCESSES FOR THE PREPARATION OF PANCRATISTATIN AND PANCRATISTATIN ANALOGUES [FR] PROCÉDÉS DE PRÉPARATION DE PANCRATISTATINE ET D'ANALOGUES DE PANCRATISTATINE
[EN] PROCESSES FOR THE PREPARATION OF PANCRATISTATIN AND PANCRATISTATIN ANALOGUES<br/>[FR] PROCÉDÉS DE PRÉPARATION DE PANCRATISTATINE ET D'ANALOGUES DE PANCRATISTATINE
申请人:UNIV SANTIAGO COMPOSTELA
公开号:WO2009026961A1
公开(公告)日:2009-03-05
Processes for the preparation of pancratistatin and pancratistatin analogues. The key step is the reaction of a 1,3-dioxan-5-one and a nitroolefine in the presence of an amine. The process may take place in an enantioselective way when a chiral amine is used. Reduction processes then give new and advanced intermediates that are useful for the preparation of pancratistatin or selected pancratistatin analogues. The reported process also provides a method for the efficient synthesis of nitroenals, starting materials of the synthesis. Analogues of pancratistatin are also provided.
A facile regio- and stereoselectivesynthesis of functionalized pyrrolidines, spiropyrrolidines, and spiropyrrolizidines using the Baylis-Hillman adducts derived from nitroolefins via intermolecular [3+2]-cycloaddition reaction is reported. Baylis-Hillman reaction - intermolecular [3+2] cycloaddition - azomethineylides - 1,3-dipolar cycloaddition - pyrrolidines - spiro compounds
First Friedel-Crafts Reaction of the Baylis-Hillman Adducts Derived from Nitroolefins: Application towards Synthesis of Pyrrolidines and Spiropyrrolidines
作者:Manickam Bakthadoss、Nagappan Sivakumar
DOI:10.1055/s-0030-1260557
日期:2011.6
A general and simple protocol for the arylation of Baylis-Hillman adducts derived from nitroolefins leading to novel classes of (E)-2-nitro-1,3-diarylprop-1-enes and 1-[(E)-2-nitro-3-arylallyl]naphthalenes via an intermolecular Friedel-Crafts reaction have been achieved. Further application of these compounds has been demonstrated for the synthesis of pyrrolidines and 3-spiropyrrolidines which are integral components of many natural products and bioactive molecules.
Synthesis and evaluation of α-hydroxymethylated conjugated nitroalkenes for their anticancer activity: Inhibition of cell proliferation by targeting microtubules
作者:Renu Mohan、Namrata Rastogi、Irishi N.N. Namboothiri、Shaikh M. Mobin、Dulal Panda
DOI:10.1016/j.bmc.2006.07.035
日期:2006.12
(MBH) type reaction of a variety of aromatic and heteroaromatic conjugatednitroalkenes with formaldehyde in the presence of stoichiometric amounts of imidazole and catalytic amounts (10 mol %) of anthranilic acid at room temperature provided the corresponding hydroxymethylated derivatives in moderate to good yield. The parent nitroalkenes and their MBH adducts were subsequently screened for their anticancer
The Morita–Baylis–Hillmanreaction (MBHR) of conjugated nitroalkenes has been successfully carried out for the first time. A variety of aromatic and heteroaromatic nitroalkenes react with formaldehyde at room temperature in the presence of stoichiometric amounts of imidazole and catalytic amounts of anthranilic acid in THF providing moderate to good yields of the multifunctional adducts in most of