Dimethylisopropysilyl ether derivative in gas chromatography/mass spectrometry of 11-dehydrothromboxane B2. II. Fragmentation of methyl ester-11-n-propylamide-dimethylisopropylsilyl ether derivative.
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چکیده
منابع مشابه
Methyl-n-propyl ether.
ME T H Y L N P R O P Y L ETHER is an isomer of di-ethyl ether and possesses the formula CHs-O(CHI)J-CHJ. The physical properties of the two drugs are similar, and the vapour pressure curve of methyl-n-propyl ether is such that it may be used in the Oxford Vaporizer No. 1 without any alteration in the calibration of the instrument (see Figure). Methyl-n-propyl ether has a very unpleasant pungent...
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Background and objectives: Essential oils (volatiles) are aromatic oily liquids prepared from different parts of plants and demonstrate various therapeutic and cosmetic properties. The dissolution of essential oils are not desirable in water, therefore the aim of this research was evaluation and selection the best co-solvents for increasing their solubility and bio availability...
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In human plasma, 11-dehydrothromboxane (TX) B2 is a major long lived metabolite (t1/2 45 min) formed from infused TXB2, the hydration product of biologically active TXA2. Plasma concentrations of TXB2 itself are readily confounded by ex vivo platelet activation and, theoretically, an enzymatic derivative of this compound, not subject to formation in whole blood, would more accurately reflect TX...
متن کاملDesoxyhemigossypol 6-methyl ether
THE TITLE SESQUITERPENE [SYSTEMATIC NAME: 6-methoxy-10-methyl-7-(propan-2-yl)-2-oxatricyclo[6.3.1.0(4,12)]dodeca-1(11),4,6,8(12),9-pentaen-5-ol], C(16)H(18)O(3), was isolated from pathogen-infected stele tissue of Gossypium barbadense. There are two mol-ecules in the asymmetric unit and the dihedral angle between their naphtho-furan systems is 86.48 (2)°. In the crystal, O-H⋯O hydrogen bonds be...
متن کاملSerial urinary 11-dehydrothromboxane B2, aspirin dose, and vascular events in blacks after recent cerebral infarction.
BACKGROUND AND PURPOSE Incomplete platelet inhibition by aspirin (aspirin resistance) may be a reason for stroke recurrence in some patients. 11-dehydrothromboxane B2 (11-DTB2) is a stable thromboxane A2 metabolite that reflects in vivo platelet activation. This pilot study was intended to evaluate the reproducibility of urinary 11-DTB2 over time and to look for evidence of aspirin resistance. ...
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ژورنال
عنوان ژورنال: Chemical and Pharmaceutical Bulletin
سال: 1989
ISSN: 0009-2363,1347-5223
DOI: 10.1248/cpb.37.3015