Results 231 to 240 of about 160,210 (280)

"Dogan offloads Star TV" - C21 media

, 2011
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Synthesis of the C1−C21 (C1‘-C21‘) Fragment of the Dimeric Polyketide Natural Product SCH 351448

Organic Letters, 2002
[structure: see text] A convergent, stereoselective assembly of the C1-C21 (C1'-C21') fragment of SCH 351448, a 28-membered bis-lactone natural product, has been developed. A highly efficient approach to this fragment assembles 75% of the carbon skeleton and all the stereochemical elements present in the natural product.
Ashoke, Bhattacharjee, Omid, Soltani, Jef K, De Brabander   +2 more
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C21 steroidal glycosides from Hemidesmus indicus

Phytochemistry, 2000
Two novel pregnane glycosides, denicunine (1) and heminine (4), have been isolated from the dried stem of Hemidesmus indicus R.Br. (family: Asclepiadaceae). Chemical transformations and spectroscopic evidence viz: 1H and 13C NMR spectroscopy and FABMS are consistent with the structures calogenin 3-O-3-O-methyl-beta-D-fucopyranosyl-(1-->4)-O-beta-D ...
P, Sigler, R, Saksena, D, Deepak, A, Khare   +3 more
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Electronic spectra of long odd-number carbon chains C17–C21 and C13−–C21−

Chemical Physics Letters, 1999
Abstract Electronic transitions of the odd-number neutral and anionic carbon chains C2n+1 (n=8–10) and C2n+1− (n=6–10) have been observed in a neon matrix at 6 K after co-deposition with laser-vaporized graphite. The assignments are based on a comparison with the previously identified electronic transition of C7 to C15 and C5− to C11−, and the ...
Muriel Wyss, Michel Grutter, John P. Maier   +2 more
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Robber Barons of the C21

New Electronics, 2021
DESPITE RECORD SALES AMAZON DOESN’T HAVE TO PAY ANY CORPORATION TAX. ISN’T IT TIME WE LOOKED AT TAX REFORM?
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C21-Steroide

1962
Aus peripherem menschlichem Blutplasma liesen sich bisher nachstehende C21-Steroide mittels organischer Losungsmittel extrahieren und ausreichend identifizieren : 4-Pregnen-11 β, 17 α, 21 -triol-3,20-dion (Cortisol) [173], 4-Pregnen-11 β, 21-diol-3,20-dion (Corticosteron) [102, 174], 4-Pregnen-11 β, 21-diol-3,20-dion-18-al (Aldosteron) [
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Production of C21 steroids in rat fetal ovaries

Journal of Steroid Biochemistry, 1988
Female gonads of fetal and neonatal rats were cultured for 24 h in medium 199 supplemented with dibutyryl cyclic AMP (dcAMP), cycloheximide, spironolactone (an inhibitor of 17 alpha-hydroxylase) or hydroxylated cholesterol derivatives. Radioimmunoassays of pregnenolone (P5) and progesterone (P4) were performed in the media.
V, Rouiller, M N, Gangnerau, R, Picon
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ChemInform Abstract: Synthesis of the C11—C21 and C13—C21 Fragments of Epothilones from D‐Glucose.

ChemInform, 2001
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Hyo Won Lee, Ihl‐Young Choi Lee, Yong Deog Hong   +2 more
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C21. Super Resolution Using Dictionary Technique

2013 30th National Radio Science Conference (NRSC), 2013
This paper addresses the problem of generating a super resolution (SR) image from a degraded input image, using a hybrid algorithm called Kernel-Local Learned Dictionary (K-LLD) to form dictionary from low resolution (LR) image to produce high resolution (HR) one, a patch-based, locally adaptive denoising method based on clustering the given degraded ...
Ghada M. Shaker, Alaa A. El-fattah, Moawed I. Dessouky, M.Y.El Nahas   +3 more
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Die chromatographische Trennung der C21-Steroide

Zeitschrift für Die Gesamte Experimentelle Medizin, 1954
a) Die eingewogenen Hormone werden innerhalb einer geringen Fehlergrenze uber die Chromatographie wieder gefunden. b) Ahnlich wie die C17-Steroide kann auch ein Gemisch von C21-Steroiden chromatographisch gut getrennt werden. c) Von besonderer Wichtigkeit erscheint die Trennung der C17-von den C21-Steroiden.
Jakob Bauer, Josef Karl
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