Showing 1-30 of 37 results for "237752"
D W Armstrong et al.
Journal of pharmaceutical and biomedical analysis, 11(10), 881-886 (1993-10-01)
Recently it was found that normal adults excrete pipecolic acid primarily as the D-enantiomer even though it is present in the blood stream mainly as the L-enantiomer (i.e. > 98% L). This study of pipecolic acid stereochemistry was extended to...
S Umair et al.
Experimental parasitology, 131(1), 101-106 (2012-03-31)
Catabolism of lysine through the pipecolate, saccharopine and cadaverine pathways has been investigated in L3 and adult Haemonchus contortus and Teladorsagia circumcincta. Both enzymes of the saccharopine pathway (lysine ketoglutarate reductase (LKR) and saccharopine dehydrogenase (SDH)) were active in L3...
Hye-Ran Yoon et al.
Archives of pharmacal research, 33(2), 317-323 (2010-03-03)
If early diagnosis is not made, patients with peroxisomal disorders rapidly progress to sudden death, physical defect or mental retardation resulted in storage of the toxic material into the brain. Therefore, it is necessary to develop the analytical method for...
Hana Návarová et al.
The Plant cell, 24(12), 5123-5141 (2012-12-12)
Metabolic signals orchestrate plant defenses against microbial pathogen invasion. Here, we report the identification of the non-protein amino acid pipecolic acid (Pip), a common Lys catabolite in plants and animals, as a critical regulator of inducible plant immunity. Following pathogen...
Eduard A Struys et al.
FEBS letters, 584(1), 181-186 (2009-11-26)
The mammalian degradation of lysine is believed to proceed via two distinct routes, the saccharopine and the pipecolic acid routes, that ultimately converge at the level of alpha-aminoadipic semialdehyde (alpha-AASA). alpha-AASA dehydrogenase-deficient fibroblasts were grown in cell culture medium supplemented...
P A Watkins et al.
The Journal of clinical investigation, 83(3), 771-777 (1989-03-01)
Peroxisomal function was evaluated in a male infant with clinical features of neonatal adrenoleukodystrophy. Very long chain fatty acid levels were elevated in both plasma and fibroblasts, and beta-oxidation of very long chain fatty acids in cultured fibroblasts was significantly...
Iris Thondorf et al.
Bioorganic & medicinal chemistry, 19(21), 6409-6418 (2011-10-01)
The proton-coupled amino acid transporter hPAT1 has recently gained much interest due to its ability to transport small drugs thereby allowing their oral administration. A three-dimensional quantitative structure-activity relationship (3D QSAR) study has been performed on its natural and synthetic...
Rodney A Fernandes et al.
Organic & biomolecular chemistry, 10(38), 7789-7800 (2012-08-23)
A newly developed π-allylpalladium with a (-)-β-pinene framework and an isobutyl side chain catalyzed the enantioselective allylation of imines in good yields and enantioselectivities (20 examples, up to 98% ee). An efficient enantioselective synthesis of the (R)-α-propyl piperonylamine part of...
Luigi Servillo et al.
Journal of agricultural and food chemistry, 60(1), 315-321 (2012-01-03)
The presence of pipecolic acid and pipecolic acid betaine, also known as homostachydrine, is herein reported for the first time in Citrus genus plants. Homostachydrine was found in fruits, seeds, and leaves of orange, lemon, and bergamot (Citrus bergamia Risso...
Yi Chai et al.
Chemistry & biology, 17(3), 296-309 (2010-03-27)
The tubulysins are a family of complex peptides with promising cytotoxic activity against multi-drug-resistant tumors. To date, ten tubulysins have been described from the myxobacterial strains Angiococcus disciformis An d48 and Archangium gephyra Ar 315. We report here a third...
J C M Baas et al.
Journal of inherited metabolic disease, 25(8), 699-701 (2003-04-23)
We reviewed our data on patients in whom plasma pipecolic acid was analysed. Mild to moderate elevations of pipecolic acid were frequently found in non-peroxisomal disorders and this should be taken into account when interpreting the laboratory data.
Ramakrishna Edupuganti et al.
Organic & biomolecular chemistry, 10(26), 5021-5031 (2012-05-12)
This short perspective reports on the synthesis and applications of a class of chiral amino carbonyl compounds, masked oxo-sulfinamides where the amine is protected with an N-sulfinyl moiety and the carbonyl group is protected as the ketal or 1,3-dithiane. These...
Hirofumi Inoue et al.
Biological & pharmaceutical bulletin, 34(2), 287-289 (2011-03-19)
A simple and highly sensitive high-performance liquid chromatography method for the determination of pipecolic acid in mouse brain areas was developed. After homogenization of brain and pretreatment with o-phthalaldehyde, the pipecolic acid and (2S,3S)-3-methylpyrrolidine-2-carboxylic acid (internal standard) were derivatized with...
Timothy K Beng et al.
Journal of the American Chemical Society, 132(35), 12216-12217 (2010-09-03)
The catalytic dynamic resolution (CDR) of rac-2-lithio-N-Boc-piperidine using chiral ligand 8 or its diastereomer 9 in the presence of TMEDA has led to the highly enantioselective syntheses of both enantiomers of 2-substituted piperidines using a wide range of electrophiles. The...
Hai-Chao Xu et al.
Journal of the American Chemical Society, 132(8), 2839-2844 (2010-02-06)
Anodic olefin coupling reactions using a tosylamine trapping group have been studied. The cyclizations are favored by the use of a less-polar radical cation and more basic reaction conditions. The most significant factor for obtaining good yields of cyclic product...
M R Baumgartner et al.
Annals of neurology, 47(1), 109-113 (2000-01-13)
We describe an 18-year-old patient with psychomotor retardation and abnormally short metatarsi and metacarpals but no other signs of classic Refsum disease. Molecular analysis of the phytanoyl-coenzyme A hydroxylase gene revealed a homozygous deletion causing a frameshift. Surprisingly, L-pipecolic acid...
Susan Keay et al.
Chemical biology & drug design, 77(6), 421-430 (2011-03-01)
Interstitial cystitis/painful bladder syndrome is a chronic bladder disorder with epithelial thinning or ulceration, pain, urinary frequency and urgency, for which there is no reliably effective therapy. We previously reported that interstitial cystitis/painful bladder syndrome bladder epithelial cells make a...
Kuo-Yuan Hung et al.
The Journal of organic chemistry, 75(24), 8728-8731 (2010-11-26)
An efficient stereoselective synthesis of fully protected (2S,4R)-4-methylpipecolic acid has been developed. The synthesis was achieved by initial asymmetric α-alkylation of glycine with a chiral iodide, affording the linear precursor as a single stereoisomer. Subsequent aldehyde formation using OsO(4)/NaIO(4) followed...
Hitoshi Kodamatani et al.
Talanta, 78(1), 227-232 (2009-01-29)
The effect of a carboxyl group beside nitrogen of aliphatic amines on the tris(2,2'-bipyridine)ruthenium(III), Ru(bpy)(3)(3+), chemiluminescent reaction was examined. It has been shown that a carboxylate anion promotes the chemiluminescent reaction at a lower pH and then the aliphatic amines...
Katerina Sadilkova et al.
Journal of neuroscience methods, 184(1), 136-141 (2009-07-28)
Pyridoxine-dependent seizures (PDS) is an autosomal recessive disorder characterized by seizures presenting in neonates or infants up to 3 years of age which respond to pharmacological doses of pyridoxine. Alpha-aminoadipic semialdehyde dehydrogenase (antiquitin) deficiency was identified as an underlying defect...
Meng-Hui Wang et al.
Journal of microbiology and biotechnology, 23(2), 260-266 (2013-02-16)
Rhodococcus sp. strain p52, a previously isolated dibenzofuran degrader, could effectively inhibit the growth of cyanobacteria, including species of Microcystis, Anabaena, and Nodularia. When strain p52 was inoculated at the concentration of 7.7×10(7) CFU/ml, 93.5% of exponentially growing Microcystis aeruginosa...
Analogues of arginine vasopressin modified in the N-terminal part of the molecule with pipecolic acid isomers.
Dariusz Sobolewski et al.
Advances in experimental medicine and biology, 611, 501-502 (2009-04-30)
Chia-Hui Wu et al.
Applied microbiology and biotechnology, 97(4), 1581-1587 (2012-03-31)
In the Candida antarctica lipase B-catalyzed hydrolysis of (R,S)-azolides derived from (R,S)-N-protected proline in water-saturated methyl tert-butyl ether (MTBE), high enzyme activity with excellent enantioselectivity (V (S) V (R) (-1)  > 100) for (R,S)-N-Cbz-proline 1,2,4-triazolide (1) and (R,S)-N-Cbz-proline 4-bromopyrazolide (2) was...
Andrew D Patterson et al.
The Journal of biological chemistry, 286(22), 19511-19522 (2011-04-14)
To enhance understanding of the metabolic indicators of type 2 diabetes mellitus (T2DM) disease pathogenesis and progression, the urinary metabolomes of well characterized rhesus macaques (normal or spontaneously and naturally diabetic) were examined. High-resolution ultra-performance liquid chromatography coupled with the...
Dana M Bis et al.
Chembiochem : a European journal of chemical biology, 16(6), 990-997 (2015-03-11)
Macrolide-pipecolate natural products, such as rapamycin (1) and FK-506 (2), are renowned modulators of FK506-binding proteins (FKBPs). The nocardiopsins, from Nocardiopsis sp. CMB-M0232, are the newest members of this structural class. Here, the biosynthetic pathway for nocardiopsins A-D (4-7) is...
S J Mihalik et al.
Pediatric research, 25(5), 548-552 (1989-05-01)
L-Pipecolic acid, a cyclic imino acid produced during the degradation of lysine, accumulates in body fluids of infants with the generalized peroxisomal disorders, including Zellweger syndrome, neonatal adrenoleukodystrophy, and infantile Refsum disease. Peroxisome-enriched fractions from normal human liver oxidized L-[3H]pipecolic...
Clara D M van Karnebeek et al.
Molecular genetics and metabolism, 107(3), 335-344 (2012-10-02)
To evaluate the efficacy and safety of dietary lysine restriction as an adjunct to pyridoxine therapy on biochemical parameters, seizure control, and developmental/cognitive outcomes in children with pyridoxine-dependent epilepsy (PDE) caused by antiquitin (ATQ) deficiency. In this observational study, seven...
Santos Fustero et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 18(12), 3753-3764 (2012-02-16)
The preparation of optically pure quaternary piperidines, both fluorinated and non-fluorinated, has been achieved from a chiral imino lactone derived from (R)-phenylglycinol. In the case of the fluorinated derivatives, the addition of (trifluoromethyl)trimethylsilane (TMSCF(3)) followed by iodoamination and migration of...
[Construction of facilities in the health sector].
R Langeland
Sykepleien, 63(15), 782-784 (1976-09-05)
Arjun Sengupta et al.
Malaria journal, 10, 384-384 (2011-12-27)
Plasmodium vivax is responsible for the majority of malarial infection in the Indian subcontinent. This species of the parasite is generally believed to cause a relatively benign form of the disease. However, recent reports from different parts of the world...

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