The separation and synthesis of lipidic 1,2- and 1,3-diols from natural phenolic lipids for the complexation and recovery of boron
作者:John H.P Tyman、Satinderjit K Mehet
DOI:10.1016/j.chemphyslip.2003.08.004
日期:2003.12
A study has been made of the semi-synthesis of 1,3-diols (anacardic alcohols) from natural phenolic lipid resources from Anacardium occidentale and Anacardium giganteum which have given C15 and C11 derivatives, respectively. An isomeric 1,3-diol (isoanacardic alcohol) has been obtained from cardanol separated from technical cashew nut-shell liquid. Homologous 1,3-diols have been synthesised from a
Novel substituted piperidines of the general formulae (I) and (II) with the substituent definitions as explained in detail in the description are described. The compounds are suitable in particular as renin inhibitors and are highly potent.
Molecular Complexity from Aromatics: Synthesis and Photoreaction of endo -Tricyclo[5.2.2.0 2,6 ]undecanes. Formal Total Syntheses of (±)-Coriolin
作者:Vishwakarma Singh、Biswajit Samanta、Vinayak V Kane
DOI:10.1016/s0040-4020(00)00674-8
日期:2000.9
of cyclopentadiene gave the tricyclic keto epoxide 4 which was elaborated to tricyclo[5.2.2.02,6]undecenones 5 and 18 containing the major structural and stereochemical features of coriolin, in latent form. Triplet sensitized 1,2-acyl shifts in 5 and 18 gave tetracyclic compounds 6 and 19 in a stereoselective manner. Reductivecleavage of cyclopropanerings in 6 and 19 with H2/Pd-C and TBTH-AIBN respectively
Novel substituted piperidines of the general formulae (I) and (II)
with the substituent definitions as explained in detail in the description are described. The compounds are suitable in particular as renin inhibitors and are highly potent.
Visible Light Promoted Iron‐Catalyzed One‐Pot Synthesis of 2‐Arylimino‐2
<i>H‐</i>
Chromenes from 2‐Hydroxybenzyl Alcohols and β‐ Ketothioamides at Room Temperature
作者:Mohd Waheed、Meshari A. Alsharif、Mohammed Issa Alahmdi、Sayeed Mukhtar、Humaira Parveen
DOI:10.1002/ejoc.202300136
日期:——
An efficient, environmentally benign and one-pot approach for the synthesis of 2-arylimino-2H-chromenes from 2-hydroxybenzyl alcohols and β-ketothioamides at room temperature under visible light has been developed. The reported reaction conditions were favorable for a wide range of β-ketothioamides afforded good to excellent yields of the respective products.
开发了一种在室温下可见光下从 2-羟基苄醇和 β-酮硫酰胺合成2-arylimino-2 H -chromene的高效、环境友好的一锅法。报道的反应条件有利于广泛的 β-酮硫代酰胺,提供了各自产品的良好到极好的收率。