UTILIZATION OF 13C-13C COUPLING IN STRUCTURAL AND BIOSYNTHETIC STUDIES
نویسندگان
چکیده
منابع مشابه
Applicability of GPC, GC-MS and 13C NMR techniques and DFRC method in comparative structural studies of Lignin
In this research, the characteristics of CMP dioxane lignin (hardwood origin) and soda bagasse lignin (ethanol soluble fraction) and dioxane lignin of bagasse were studied using gel permeation chromatography, gas chromatography-mass spectrometry and 13C NMR spectroscopy and DFRC degradation procedure. The results indicated that the main structural units in lignins are phenyl propane skeletons b...
متن کاملIncorporation and utilization of [3-13C]lactate and [1,2-13C]acetate by rat skeletal muscle.
Skeletal muscle can utilize many different substrates, and traditional methodologies allow only indirect discrimination between oxidative and nonoxidative uptake of substrate, possibly with contamination by metabolism of other internal organs. Our goal was to apply 1H- and 13C-nuclear magnetic resonance spectroscopy to monitor the patterns of [3-13C]lactate and [1,2-13C]acetate (model of simple...
متن کاملSYNTHESIS OF SOME SUBSTITUTED NAPHTHALENES VIA BENZYNE AND THEIR 13C-NMR AND 'H-NMR STUDIES
Aprotic diazotization of anthranilic acid with isoamylnitrite or amylnitrite gave benzenediazonium-2- carboxylate. Subsequent thermal decomposition of this diazonium salt (in situ) in 1,2-dichloroethane as a solvent at 85OC and in the presence of 2,5-diethyl-3,4-diphenylcyclopentadienonaes a trapping agent gave 1,4-diethyl-2, 3-diphenylnaphthalene in high yield, after loss of carbon monoxid...
متن کاملBiosynthetic studies on validamycins. I. 1H and 13C NMR assignments of validamycin A.
The 1H and 13C NMR spectra of validamycin A have been assigned by use of 2D homonuclear correlation spectroscopy for protons, and off-resonance decoupling, single frequency off-resonance decoupling, and comparison studies with model compounds for carbons. Effects of pH on carbon chemical shifts have also been studied.
متن کاملBiosynthetic studies of ebelactone A and B by 13C NMR spectrometry.
Biosynthetic pathways of ebelactone A and B were studied by 13C NMR spectroscopy. By using 13C labeled compounds as precursors it was determined that ebelactone A was derived from one molecule of acetic acid and six propionic acids and ebelactone B from one molecule of acetic acid, five propionic acids and one butyric acid.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of Antibiotics
سال: 1974
ISSN: 0021-8820,1881-1469
DOI: 10.7164/antibiotics.27.558