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Direct synthesis of acetic acid from CH4 and CO2 by a step-wise route over Pd/SiO2 and Rh/SiO2 catalysts
Abstract The theoretical and experimental feasibility of direct conversion of CH4 and CO2 to acetic acid by an isothermal step-wise route over Pd/SiO2 and Rh/SiO2 catalysts was investigated. TheExpand
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Wortmannines A-C, three novel wortmannin derivatives with an unusual five-membered B ring from the endophytic fungus Talaromyces wortmannii LGT-4
Wortmannine A (1), a dinor-carbon wortmannin derivative with an unusual five-membered B ring, together with wortmannine B (2), a wortmannin derivative bearing an unusual five-membered B ring andExpand
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Effect of precursor on the pore structure of carbon foams
Abstract Carbon foams were prepared from coal tar pitch, petroleum mesophase pitch, and AR pitch. The molecular weights of the precursors were determined by gel permeation chromatography. FoamExpand
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Pyrrole aminoimidazole alkaloid metabiosynthesis with marine sponges Agelas conifera and Stylissa caribica.
Game-SET-match: Pyrrole aminoimidazole alkaloids (PAIs) are metabiosynthesized from chlorinated analogues of oroidin by cell-free enzyme preparations from PAI-producing sponges. Evidence andExpand
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De novo synthesis of benzosceptrin C and nagelamide H from 7-15N-oroidin: implications for pyrrole-aminoimidazole alkaloid biosynthesis.
De novo synthesis of the natural products benzosceptrin C (7) and nagelamide H (8) was achieved using cell-free enzyme preparations from the marine sponges Agelas sceptrum and Stylissa caribicaExpand
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Synthesis of 7-(15)N-Oroidin and evaluation of utility for biosynthetic studies of pyrrole-imidazole alkaloids by microscale (1)H-(15)N HSQC and FTMS.
Numerous marine-derived pyrrole-imidazole alkaloids (PIAs), ostensibly derived from the simple precursor oroidin, 1a, have been reported and have garnered intense synthetic interest due to theirExpand
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Catalytic asymmetric synthesis of cyclic α-alkyl-amino acid derivatives by C,N-double alkylation
Catalytic asymmetric synthesis of various cyclic α-alkyl-amino acid derivatives having a tetrasubstituted α-carbon, such as α-alkylprolines has been accomplished by asymmetric phase-transferExpand
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Synthesis of macrosphelides H and G
Abstract A compound with furyl and vinyl groups was designed as an intermediate for synthesis of macrosphelide H. The furyl group was oxidatively transformed into the key C(5)–O(10) part by aExpand
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Secovironolide, a novel furanosteroid scaffold with a five-membered B ring from the endophytic fungus Talaromyces wortmannii LGT-4
Secovironolide (1) was purified from the culture broth of Talaromyces wortmanni and is the first example of a furanosteroid scaffold bearing a five-membered B ring. The structure of 1 was elucidatedExpand
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The effect of incorporating carbon nanotubes in titania films used for the photocathode protection of 304 stainless steel
Abstract Composite films of TiO 2 and multiwall carbon nanotubes (MWCNTs) were prepared on 304 stainless steel (304 SS) by the sol–gel method and heat treatment. Their crystal phase and surfaceExpand
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