k 134

K134 is an inhibitor of phosphodiesterase 3. The IC50s of K134 for PDE3A, PDE3B, PDE5, PDE2 and PDE4 are 0.1, 0.28, 12.1, >300 and >300 μM, respectively.

EUK-134 是合成的超氧化物歧化酶和过氧化氢酶模拟物，可保护大鼠肾脏免受缺血再灌注引起的损伤。它作用于 H9C2 细胞，降低NF-κB 表达、MDA 水平和蛋白质羰基化。它是具有过氧化氢酶活性的超氧化物歧化酶 (SOD) 模拟物 (SODm)。它是保护有丝分裂的抗氧化剂。

Dolutegravir sodium (GSK-1349572A) 是一种高效、口服的 HIV 整合酶链转移抑制剂，在 HIV-1 整合酶催化的链转移中的 IC50值为 2.7 nM， 抑制 HIV-1 病毒在外周血单个核细胞中的复制，IC50为 0.51 nM。它对 Y143R，N155H 和 G140S Q148H 突变体也保持高效。

Dolutegravir (GSK1349572) 是口服HIV 整合酶链转移高效抑制剂，抑制 HIV-1 病毒在外周血单个核细胞中的复制。它对耐拉替拉韦的特征突变体 Y143R、Q148K、N155H 和 G140S Q148H 具有中等活性。

Alphitonin is a flavonoid that has been found in L. leptolepis wood.1 It is also a metabolic intermediate that is formed during the catabolism of quercetin by the human gut bacteria E. ramulus.2,3 |1. Chen, K., Ohmura, W., Doi, S., et al. Termite feeding deterrent from Japanese larch wood. Bioresour. Technol. 95(2), 129-134 (2004).|2. Braune, A., Gütschow, M., Engst, W., et al. Degradation of quercetin and luteolin by Eubacterium ramulus. Appl. Environ. Microbiol. 67(12), 5558-55567 (2001).|3. Jaganath, I.B., Mullen, W., Lean, M.E.J., et al. In vitro catabolism of rutin by human fecal bacteria and the antioxidant capacity of its catabolites. Free Radic. Biol. Med. 47(8), 1180-1189 (2009).

Palmitic acid-13C is intended for use as an internal standard for the quantification of palmitic acid by GC- or LC-MS. Palmitic acid is a 16-carbon saturated fatty acid. It comprises approximately 25% of human total plasma lipids.1 It increases protein levels of COX-2 in RAW 264.7 cells when used at a concentration of 75 μM.2 Palmitic acid is involved in the acylation of proteins to anchor membrane-bound proteins to the lipid bilayer.2,3,4,5,6 |1. Santos, M.J., López-Jurado, M., Llopis, J., et al. Influence of dietary supplementation with fish oil on plasma fatty acid composition in coronary heart disease patients. Ann. Nutr. Metab. 39(1), 52-62 (1995).|2. Lee, J.Y., Sohn, K.H., Rhee, S.H., et al. Saturated fatty acids, but not unsaturated fatty acids, induced the expression of cyclooxygenase-2 mediated through toll-like receptor 4. J. Biol. Chem. 276(20), 16683-16689 (2001).|3. Dietzen, D.J., Hastings, W.R., and Lublin, D.M. Caveolin is palmitoylated on multiple cysteine residues. Palmitoylation is not necessary for localization of caveolin to caveolae. J. Biol. Chem. 270(12), 6838-6842 (1995).|4. Robinson, L.J., and Michel, T. Mutagenesis of palmitoylation sites in endothelial nitric oxide synthase identifies a novel motif for dual acylation and subcellular targeting. Proc. Nat. Acad. Sci. USA 92(25), 11776-11780 (1995).|5. Topinka, J.R., and Bredt, D.S. N-terminal palmitoylation of PSD-95 regulates association with cell membranes and interaction with K+ channel Kv1.4. Neuron 20(1), 125-134 (1998).|6. Miggin, S.M., Lawler, O.A., and Kinsella, B.T. Palmitoylation of the human prostacyclin receptor. Functional implications of palmitoylation and isoprenylation. J. Biol. Chem. 278(9), 6947-6958 (2003).

Palmitic acid-13C is intended for use as an internal standard for the quantification of palmitic acid by GC- or LC-MS. Palmitic acid-13C contains 13C at the C2 position and has been used in the study of free fatty acid incorporation into phospholipid fatty acids in soil microbes.1 Palmitic acid is a 16-carbon saturated fatty acid. It comprises approximately 25% of human total plasma lipids.2 It increases protein levels of COX-2 in RAW 264.7 cells when used at a concentration of 75 μM.3 Palmitic acid is involved in the acylation of proteins to anchor membrane-bound proteins to the lipid bilayer.3,4,5,6,7

MCC-134 is an inverse agonist for the pancreatic-type ATP-sensitive K(+) channel. It also used as a vascular relaxing agent.

Piericidin B is a bacterial metabolite that has been found inS. mobaraensisand has insecticidal and antimicrobial activities.1,2,3It inhibits NADH oxidase activity in isolated bovine heart mitochondria and inhibits respiration in isolated rat liver mitochondria and isolated cockroach (P. americana) muscle mitochondria.2,3Topical application of piericidin B (4 μg insect) induces mortality in 87.5% of houseflies (M. domestica).1It induces 93.3, 100, and 100% mortality in rice stem borer (C. simples), silkworm (B. mori), and green caterpillar (P. rapae) larvae, respectively, when applied at respective concentrations of 60, 4.8, and 96 μg larva. Piericidin B is active against the fungiT. asteroides,T. rubrum,M. gypseum, andC. neoforms(MICs = 20, 10, 20, and 2 μg ml, respectively), as well as the bacteriaM. luteusandP. vulgaris(MICs = 50 and 100 μg ml, respectively). 1.Takahashi, N., Suzuki, A., Kimura, Y., et al.Isolation, structure and physiological activities of piericidin B, natural Insecticide produced by a StreptomycesAgr. Biol. Chem.32(9)1115-1122(1968) 2.Jeng, M., Hall, C., Crane, F.L., et al.Inhibition of mitochondrial electron transport by piericidin A and related compoundsBiochemistry7(4)1311-1322(1968) 3.Mitsui, T., Fukami, J.-I., Fukunaga, K., et al.Studies on piericidin. I. : Effects of piericidin A and B on mitochondrial electron transport in insect muscle comparing with rotenoneSci. Insect Control34(3)126-134(1969)