Results 81 to 90 of about 37,838,535 (141)

4-(2-Chloroanilino)-3-phenylfuran-2(5H)-one

Acta Crystallographica Section E, 2011
The title compound, C16H12ClNO2, featuring a furan-2(5H)-one (γ-butyrolactone) core, contains two molecules (A and B) in the asymmetric unit, with different dihedral angles between the central ring and the pendant phenyl and chlorobenzene rings [
Zhu-Ping Xiao, Ze-Jun Huang, Xiao-Yang Liu, Kai-Shuang Xiang, She-Rong Yu   +4 more
doaj   +1 more source

Tuberostemoamide hemihydrate

Acta Crystallographica Section E, 2011
In the crystal structure of the title compound {systematic name: (1′S,2R,2′R,3′S,6′R)-3′-ethyl-4-methyl-5H-5′-oxa-10′-azaspiro[furan-2,4′-tricyclo[8.3.0.02,6]tridecane]-5,11 ...
Rong-Rong Zhang, Zhi-Guo Ma, Guo-Qiang Li, Paul Pui-Hay But, Ren-Wang Jiang   +4 more
doaj   +1 more source

A novel protocol for the stereoselective synthesis of variously substituted (Z)-5-ylidene-5H-furan-2-ones

, 1998
The Pd(II)- or Ag(I)-catalyzed lactonization of easily available (E)-4- (1-alkynyl)-2-bromopropenoic acids provides (Z)-3-bromo-5-ylidene-5H-furan- 2-ones, 5.
ROSSI, RENZO, Mannina L., Renzo Rossi, MANNINA, LUISA, Fabio Bellina, BELLINA, FABIO   +5 more
core   +1 more source

EXTRACT OF BARBERRY AS ENTIRELY GREEN CATALYST FOR THE SYNTHESIS OF STRUCTURALLY DIVERSE 3,4,5-SUBSTITUTED FURAN-2(5H)-ONES [PDF]

, 2016
An eco-friendly and environmentally benign synthesis of 3,4,5-substituted furan-2(5H)-ones employing Iranian seedless barberry, known as Zereshk, (Berberis integerrima “Bidaneh”, Berberidaceae) as a biocatalyst, was developed.
Mojtaba Lashkari, Razieh Doostmohammadi, Malek Taher Maghsoodlou, Belgheis Adrom, Nourallah Hazeri   +4 more
core   +1 more source

Synthesis of 4-aryl-3-bromo-5-arylidenefuran-2(5H)-ones rubrolides analogues [PDF]

, 2009
Os γ-alquilidenobutenolídeos correspondem a uma família de produtos naturais que possui um grande número de representantes com diversas atividades biológicas.
Barcelos, Rosimeire Coura
core  

Isolation, characterization and therapeutic potential of a novel furanoid diterpene lactone from Hedychium spicatum rhizomes: Insights into antioxidant, anxiolytic, and circadian rhythm modulating properties

Phytomedicine Plus
Background: Hedychium spicatum rhizomes is widely used in ayurvedic medicine and traditional medicine systems around the Himalayas. Purpose: Standardization of Hedychium spicatum rhizome SCFE extract by Identification, Isolation, characterization, and ...
Alok Pratap Singh, Rajeev Kumar Sharma, Ashok Behera, Jay Ballabh Kandpal, Havagiray Chitme, Pankaj Pant   +5 more
doaj   +1 more source

SYNTHESIS AND EVALUATION OF ANTIMICROBIAL ACTIVITY OF PHENYL AND FURAN-2-YL[1,2,4] TRIAZOLO[4,3-a]QUINOXALIN-4(5H)-ONE AND THEIR HYDRAZONE PRECURSORS [PDF]

, 2009
A variety of 1-(s-phenyl)-[1,2,4]triazolo[4,3-a]quinoxalin-4(5H)-one (3a-3h) and 1-(s-furan-2-yl)-[1,2,4]triazolo[4,3- a]quinoxalin-4(5H)-one (5a-d) were synthesized from thermal annelation of corresponding hydrazones (2a-h) and (4a-d) respectively in ...
Ajani, O. O., Nwinyi, Obinna
core  

Addition reactions of acetylenic esters to 6,7-dihydrobenzo[b]furan-4-(5H)-one, 6,7-dihydroindol-4(5H)-one, 5,6-dihydrobenzo[b]furan-7(6H)-one and 5,6-dihydroindol-7(6H)-one ketoximes. Formation of reduced furo[g]- and pyrrole[g]indoles

, 2003
thermal rearrangement of 6,7-dihydrobenzo[b]furan-4(5H)-one and 4,5,6,7-tetrahydroindol-4-one 4(7)-O-(E)-(1.2-dimethoxycarbonylvinyl)ketoximes gave 4,5-dihydrofuro[2,3g]- and 4,5-dihidropyrrolo[2,3g]- and [3,2-g] indoles, three novel tricyclic ...
PIRISI, Maria Antonietta, PAGLIETTI GIUSEPPE, PINNA, Gerard Aime, SECHI MARIO   +3 more
core   +1 more source

Constituintes químicos de Vernonia scorpioides (Lam) Pers. (Asteraceae) Chemical constituents of Vernonia scorpioides (Lam) Pers. (Asteraceae)

Química Nova, 2013
The chemical investigation of hexane and ethanol extracts from the aerial parts of Vernonia scorpioides resulted in the isolation and characterization of a new polyacetylene lactone, rel-4-dihydro-4β-hydroxy-5a-octa-2,4,6-triynyl-furan-2-(5H)-one ...
Adalva Lopes Machado, Fabiana Martins Aragão, Paulo N. Bandeira, Hélcio Silva dos Santos, Maria Rose Jane R. Albuquerque, Otília Deusdênia L. Pessoa, Edilberto R. Silveira, Edson Paula Nunes, Raimundo Braz-Filho   +8 more
doaj  

An efficient synthesis of 4,5-dihydronaphtho[2,1-b]furan through a novel ring transformation of 2H-pyran-2-one

, 2004
An innovative route for the synthesis of substituted naphtho[2,1-b]furan has been delineated through a ring transformation reaction of suitably functionalized 2H-pyran-2-ones by reaction with 6,7-dihydro-5H-benzofuran-4-one, in good ...
Goel, Atul, Dixit, Manish
core   +1 more source