Results 81 to 90 of about 161 (128)
Stereoselective Synthesis of Novel Dispiro Oxindole-pyrrolothiazole-androsterone Hybrids [PDF]
Synthetic Communications, 2014 A facile synthesis of novel dispiro oxindole-pyrrolothiazole-androsterone hybrid heterocycles has been achieved through 1,3-dipolar cycloaddition. The reaction proceeds stereo- and regioselectively, affording a single isomer of the product in excellent yields with the formation of two C–C and one C–N bonds and creation of four new contiguous ...
Selvaraj Kanchithalaivan +1 more
exaly +2 more sources
Some of the next articles are maybe not open access.
Related searches:
Related searches:
ChemInform, 1995
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
L. FITJER, A. KANSCHICK, M. MAJEWSKI
openaire +1 more source
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
L. FITJER, A. KANSCHICK, M. MAJEWSKI
openaire +1 more source
Spectroscopic study of the dispiro-1,2,4,5-tetroxane (cyclohexanone diperoxide)
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2008The aim of this work is to present results derived from experimental IR and UV spectra and theoretical studies of DPCH, in order to get a more deeper insight on the physicochemical properties of this compound to gain a more deep knowledge of its action, helping in the design of new compounds with antimalaric effects.
J M, Romero +4 more
openaire +2 more sources
A New Access to Dispiro 7‐Oxaindazolidines Spiroxindole Derivatives.
ChemInform, 2003AbstractFor Abstract see ChemInform Abstract in Full Text.
Rathna Durga R. S. Manian +2 more
openaire +1 more source
Darstellung und Struktur von Dispiro‐diazaphosphetidinen
Chemische Berichte, 1977AbstractDurch thermolytische Abspaltung von Fluortrimethylsilan aus den 2,2‐Difluor‐4,4,5,5‐tetrakis‐(trifluormethyl)‐2‐trimethylsilylamino‐1,3,2λ5‐dioxaphospholanen 1 und 2 werden erste Vertreter 3 und 4 von dispirocyclisch angeordneten fünf‐ und viergliedrigen Ringen synthetisiert.
James Andrew Gibson +3 more
openaire +1 more source
Synthesis of dispiro hetero analogs of pyrrolizidine alkaloids
Russian Journal of Organic Chemistry, 2012Reactions of spiro heterocyclic enamines with 1H-pyrrole-2,3-diones, including those fused at the N–C bond to nitrogen-containing heterocycles, were not studied. We have found that 3-aroyl-1H-pyrrolo[2,1-c][1,4]benzoxazine-1,2,4-triones Ia and Ib react with an equimolar amount of 2′,5′,5′-trimethyl-4′,5′-dihydro-4H-spiro[naphthalene-1,3′-pyrrol]-4-one (
V. V. Konovalova +2 more
openaire +1 more source
Tetrahedron, 2001
Abstract 2,6-Bis(arylmethylidene)cyclohexanones undergo a regioselective 1,3-dipolar cycloaddition reaction with the azomethine ylide derived from isatin and sarcosine by a decarboxylative route affording a series of 1-N-methyl-spiro[2.31]oxindole-spiro[3.211]611-arylmethylidenecyclohexanone-4-aryl-pyrrolidines which were further annulated to give a ...
A Amal Raj, R Raghunathan
openaire +1 more source
Abstract 2,6-Bis(arylmethylidene)cyclohexanones undergo a regioselective 1,3-dipolar cycloaddition reaction with the azomethine ylide derived from isatin and sarcosine by a decarboxylative route affording a series of 1-N-methyl-spiro[2.31]oxindole-spiro[3.211]611-arylmethylidenecyclohexanone-4-aryl-pyrrolidines which were further annulated to give a ...
A Amal Raj, R Raghunathan
openaire +1 more source
A High Regioselective Synthesis of Novel Dispiro[oxindole‐cyclohexanone]pyrrolidines.
ChemInform, 2003AbstractFor Abstract see ChemInform Abstract in Full Text.
Ambrose Amal Raj +1 more
openaire +1 more source
Synthesis, Structures, and Optical Properties of Heteroarene-Fused Dispiro Compounds
The Journal of Organic Chemistry, 2010Novel heteroarene-fused dispiro compounds, dispiro[9H-fluorene-9,5'(6'H)-diindeno[1,2-b:2',1'-d]furan-6',9''-[9H]fluorene] (dsp-DIF), dispiro[9H-fluorene-9,5'(6'H)-diindeno[1,2-b:2',1'-d]thiophene-6',9''-[9H]fluorene] (dsp-DIT), and 11-phenyldispiro[9H-fluorene-9,5'(6'H)-diindeno[1,2-b:2',1'-d]pyrrole-6',9''-[9H]fluorene] (dsp-DIP-Ph) have been ...
Kowada, Toshiyuki +2 more
openaire +2 more sources
Organocatalytic enantioselective assembly of dispiro-bisoxindoles with vicinal stereocenters
Organic & Biomolecular ChemistryAn enantioselective synthesis of dispiro-bisoxindoles featuring vicinal stereogenic centers using organocatalysis is discussed in this review article.
Biplob Borah +2 more
openaire +2 more sources