Zobrazeno 1 - 10
of 125
pro vyhledávání: '"Richard T. Brown"'
Publikováno v:
The Bark Beetles, Fuels, and Fire Bibliography
There is broad consensus that active management through thinning and fire is urgently needed in many forests of the western United States. This consensus stems from physically based models of fire behavior and substantial empirical evidence. But the
Autor:
Richard T. Brown, Abdul-Hamid Zureick
Publikováno v:
Marine Structures. 14:115-132
An all fiberglass decking panel has been designed to the requirements of the trilateral code for military bridging and the circular of requirements for new construction strategic sealift ships. The truss structure provides a lightweight fiber reinfor
Publikováno v:
Tetrahedron Letters. 41:8861-8865
Stereoselective, enantiospecific syntheses of 16-methoxycarbonyl-16,17-dehydro-antirhine, its 10-hydroxy and 10-glucosyloxy derivatives have been realised from the corresponding tryptamines and the ethylene acetal of the monoterpenoid glucoside secol
Publikováno v:
Tetrahedron. 56:7591-7594
A convenient two-step synthesis of morphine-3,6-di-β- d -glucuronide in fair yield from morphine and methyl 2,3,4-tri- O -isobutyryl-1- O -trichloroacetimidoyl-α- d -glucopyranuronate is reported.
Autor:
Richard T. Brown, Mark S Derstine
Publikováno v:
Marine Structures. 13:399-419
In order to reduce the large loads that are developed in connecting semi-submersible platforms on a 5000 ft long mobile offshore base (MOB), a compliant connector concept was developed. This concept employs the cable compliant technology developed by
Publikováno v:
Tetrahedron Letters. 41:5627-5630
Hydrolysis of secologanin ethylene acetal at pH 7 resulted in stereoselective aldol cyclisation to a cyclohexene aldehyde, which, on reductive amination and cyclisation with tryptamine afforded (−)-3-iso-19,20-dehydro-β-yohimbine, converted into v
Autor:
Richard T. Brown, Mythily Kandasamy
Publikováno v:
Tetrahedron Letters. 41:3547-3550
Pure enantiomers of two diastereomeric Aspidosperma alkaloid analogues antipodal at the spiro and adjacent centres have been prepared, as kinetic and thermodynamic products, respectively, in a biomimetic sequence via a secodine-like intermediate from
Publikováno v:
Tetrahedron Letters. 41:859-862
A biogenetically patterned synthetic route to the monoterpenoid quinoline alkaloids 20-deoxycamptothecin and (±)-camptothecin from secologanin and tryptamine via vincoside/strictosidine lactams has now been realized, and hence afforded likely biosyn
Publikováno v:
Tetrahedron Letters. 40:7197-7200
A claim by Lounasmaa and Hanhinen to have synthesised a biogenetic intermediate to heteroyohimbine alkaloids, 3-iso-19-epicathenamine, isolated as the cyano adduct, 21-α-cyano-3-isorauniticine, is wrong; the product is now shown by n.O.e. difference
Publikováno v:
Journal of Agricultural and Food Chemistry. 45:3936-3939
A rapid procedure has been developed that is offered as an improvement for the analysis of lipophilic insecticides in meat. The number of physical and chemical manipulations required of previous methodologies to separate pesticide analytes from fat h