نتایج جستجو برای: 5 substituted furan 5h

تعداد نتایج: 1250944  

Journal: :Bioscience, biotechnology, and biochemistry 1993
L Mishra V K Singh N K Dubey A K Mishra

2-Chloromethyl-5H/methyl benzimidazoles were condensed with different 2-substituted 5-mercapto-1,3,4-oxadiazoles and thiadiazoles, and 4-amino 2-substituted 5-mercapto-1,2,4-triazoles. The synthesized compounds were characterized and evaluated for their fungicidal activities, and few were found to be better fungicides than those commercially used.

2012
Johannes Reisch Ranjith W. Dharmaratne

2-Dimethyl-2H-Chromenes, Coumarin Derivatives, Phase-Transfer Catalysis 2,2-Dimethyl-5H-pyrano(3,2-c)-l-benzopyrano-5-one(2) and 4H-2,3-dihydro-3-methyl-2methylene-furan-l-benzopyran-4-one (3), two new coumarin derivatives were synthesised from 4-hydroxycoumarin by treating with 3-chloro-3-methylbut-l-yne and 3-chlorobut-l-yne respectively, both reactions progressing via the phase-transfer cata...

2011
Zhu-Ping Xiao Li-Cheng Yi Jia-Liang Li Kai-Shuang Xiang Bo Zhang

In the title mol-ecule, C(10)H(7)ClO(3), the butyrolactone core, a furan-2(5H)-one, forms a dihedral angle of 59.21 (5)° with the benzene ring. In the crystal, two types of hydrogen bonds (O-H⋯O and C-H⋯Cl) link mol-ecules into infinite chains along the b axis. π-π contacts [centroid-centroid distances = 3.6359 (10) and 3.8776 (11) Å] link the chains into a three-dimensional network.

2014
Rajeev Kumar Tejendra Singh Hariram Singh Sandeep Jain R. K. Roy

A new series of 6,8-halo-substituted-2H-[1,2,4]triazino[5,6-b]indole-3(5H)-one/-thione and 6,8-halo-substituted 5-methyl-2H-[1,2,4]triazino[5,6-b]indol-3(5H)-one/-thione (5a-5l) were designed and synthesized keeping in view of the structural requirement of pharmacophore. The above compounds were characterized by thin layer chromatography and spectral analysis. Anticonvulsant activity of the syn...

Journal: :International journal of advanced academic studies 2021

Journal: :Acta Crystallographica Section E Structure Reports Online 2011

2009
Pitchaya Mungkornasawakul Stephen G. Pyne Alison T. Ung Araya Jatisatienr Anthony C. Willis

Crystals of the title compound, C(22)H(29)NO(5)·C(4)H(8)O(2), {[systematic name: (2R,3R,5R,5aS,6R,8aR,9S)-(5Z)-5-[3-butyl-tetra-hydro-6-methyl-2,5-methano-4,3,8a-[1]propan-yl[3]yl-idene-furo[3,2-f][1,4]oxazepin-7(5H)-yl-idene]-4-meth-oxy-3-methyl-furan-2(5H)-one ethyl acetate solvate} were isolated from the root extracts of Stemona aphylla (Stemonaceae). The structure closely resembles those of...

Journal: :Acta Crystallographica Section E Structure Reports Online 2009

Journal: :The Journal of organic chemistry 2004
Angela L Sauers Douglas M Ho Stefan Bernhard

This paper describes the synthesis of four chiral derivatives of the electronically highly conjugated tetra-2-pyridylpyrazine (TPPZ) bridging ligand, which are denoted (R)- and (S)-4,5- and 5,6-pineno-tetra-2-pyridylpyrazine (PTPPZ). Preparation of these ligands was undertaken through the use of commercially available, enantiomerically pure (1R)- and (1S)-alpha-pinene, which was functionalized ...

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