منابع مشابه
[Synthetic studies of imidazole C-nucleosides toward biofunctional molecules].
Synthetic studies of C4-linked imidazole C-nucleosides toward biofunctional molecules are described, in which the following items are covered. 1) Stereoselective synthesis of imidazole C- and pyrazole C-nucleosides via diazafulvene intermediates. 2) Synthesis of tetrahydrofuranylimidazoles using a PhSe group efficiently and its application to the new human histamine H(3) receptor (hH(3)R) agoni...
متن کاملSynthetic studies on leupeptins and their analogs.
Leupeptins, fermentation products of various strains of Actinomycetes^ showed strong antiplasmin activity2) and were identified as being a mixture of two major components, leupeptin Ac-LL (acetyl-L-leucyl-L-leucyl-DL-argininal, 1) and leupeptin Pr-LL (propionyl-L-leucyl-L-leucyl-DL-argininal, 2), and their analogs containing isoleucine or valine in place of one or two leucine residues of 1 or 2...
متن کاملStudies on sintering process of synthetic hydroxyapatite.
In this study the effect of sintering process in different temperatures on microstructure and morphological properties of sintered hydroxyapatite (HAp) was investigated. HAp powder was prepared by wet precipitation method from following reagents: Ca(OH)2 + H3PO4 in an alkaline conditions. Thermal analysis (TA), X-Ray diffraction method (XRD), FT-IR spectrometry (FT-IR) and scanning electron mic...
متن کاملSynthetic studies on formamidopyrimidines related to clofarabine.
Degradation of clofarabine (3) in 0.9% saline solution at 100 degrees C afforded three degradation products which were determined to be formamidopyrimidines 4-6. Compounds 4 and 5 were assigned as C(1') anomers on the basis of one-dimensional and two-dimensional NMR experiments, whereas 6 was found to be the formamidopyrimidine lacking the sugar moiety. An improved procedure for the synthesis o...
متن کاملSynthetic studies on heterocyclic natural products.
This article reviews past and ongoing research in the author's laboratory directed toward the synthesis of natural products displaying an azaspirocyclic framework, or incorporating a medium-ring nitrogen heterocycle. New synthetic technologies were devised in order to address the synthetic problems posed by the target molecules. Thus, efforts in the area of azaspirocyclic substances have relied...
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ژورنال
عنوان ژورنال: Agricultural and Biological Chemistry
سال: 1964
ISSN: 0002-1369,1881-1280
DOI: 10.1271/bbb1961.28.224