Several methods for the preparation of long-chain vicinal diketones are examined. The acyloincondensation, followed by oxidation, provides an excellent route to symmetrical compounds but is not satisfactory for unsymmetrical diketones. The latter are prepared (i) from dialkylacetylenes by semihydrogenation, hydroxylation, and oxidation with aqueous N-bromosuccinimide; and (ii) from an α-acetoxy-acid
New Molecular Markers for Prostate Tumor Imaging: A Study on 2-Methylene Substituted Fatty Acids as New AMACR Inhibitors
作者:Agnieszka Morgenroth、Elizaveta A. Urusova、Cornelia Dinger、Ehab Al-Momani、Thomas Kull、Gerhard Glatting、Holm Frauendorf、Olaf Jahn、Felix M. Mottaghy、Sven N. Reske、Boris D. Zlatopolskiy
DOI:10.1002/chem.201003176
日期:2011.8.29
expressed in prostate (more than 95 %), colon (92 %), and breast cancers (44 %) but not in the respective normal or hyperplastic tissues. Thus, targeting of AMACR could be a new strategy for molecular imaging and therapy of prostate and some other cancers. Unlabeled 2‐methylenacyl‐CoA thioesters (12 a–c) were designed as AMACR binding ligands. The thioesters were tested for their ability to inhibit the AMACR‐mediated
前列腺癌的发展与脂肪酸代谢的改变有关。α-甲基酰基辅酶A外消旋酶(AMACR)是一种过氧化物酶体和线粒体酶,催化一系列α-甲基酰基辅酶A硫酯的(S)/(R)异构体之间的相互转化。AMACR参与膳食支链脂肪酸和胆汁酸中间体的β-氧化。它在前列腺(95%以上),结肠(92%)和乳腺癌(44%)中高表达,但在相应的正常或增生组织中却没有高表达。因此,针对AMACR的靶向可能是前列腺癌和其他一些癌症的分子成像和治疗的新策略。未标记的2-亚甲基酰基-CoA硫酯(12 a – c)被设计为AMACR结合配体。测试了硫酯抑制(25 R)-THC-CoA的AMACR介导的差向异构化的能力,发现它们是强AMACR抑制剂。放射性碘(E)131 I-13碘-2-甲基对苯二甲酸12烯酸(131 I- 7 c)与AMACR阳性前列腺肿瘤细胞(LNCaP,LNCaP C4-2wt和DU145)相比均具有优先保留AMACR基因敲除LNCaP
NOVEL TRIS- OR NEOPENTYL GLYCOL-BASED AMPHIPHILES AND USES THEREOF
申请人:Industry-University Cooperation Foundation Hanyang University Erica Campus
公开号:US20190284221A1
公开(公告)日:2019-09-19
The present invention relates to a TRIS- or neopentyl glycol-based amphipathic compound, a method of preparing the same, and a method of extracting, solubilizing, stabilizing, or crystallizing a membrane protein using the same. By using the TRIS- or neopentyl glycol-based compound according to the present invention, a superior membrane protein solubilization effect is exhibited, a membrane protein can be stably stored for a long time in an aqueous solution, and the structural fluidity of the membrane protein can be excellently maintained. Accordingly, the TRIS- or neopentyl glycol-based compound can be utilized in analyzing functions and structures of membrane proteins. Membrane protein structure and function analysis is currently one of the most attractive fields of research in biology and chemistry. Since more than half of the new drugs under development target membrane proteins, the compound can be applied to membrane protein structure research closely related to drug discovery.
Preparation de derives de composes crown-4 a cycles de 13 a 16 membres, en vue d'obtenir des ionophores selectifs du lithium. Les mesures potentiometriques montrent que c'est les composes 14-crown-4 et 15-crown-4 qui possedent les meilleurs proprietes
准备 de 派生 de composes Crown-4 a cycle de 13 a 16 membres, en vue d'obtenir des ionophores selectifs du 锂。Les mesures potentiometriques montrent que c'est les composes 14-crown-4 et 15-crown-4 qui possedent les meilleurs proprietes
Dye for dye-sensitized solar cell and dye-sensitized solar cell including the same
申请人:Samsung SDI Co., Ltd.
公开号:EP2272920A1
公开(公告)日:2011-01-12
The present invention relates to a dye for a dye-sensitized solar cell and a dye-sensitized solar cell including the same. The dye is represented by Formula 1, Formula 2, or a combination thereof:
wherein, in Formulae 1 and 2 R1 to R3, R9 to R12, R13 to R15, and R21 to R23 are each independently hydrogen, a substituted or unsubstituted aromatic group, a substituted or unsubstituted heterocyclic group, substituted or unsubstituted aliphatic group, or a substituted or unsubstituted alicyclic group, R4 to R8 and R16 to R20 are each independently hydrogen or a substituted or unsubstituted aliphatic group, X is O or S, Y1 and Y2 are each independently an acidic functional group or a hydroxy group, n1 and n6 are each independently integers of 0 to 4, n2 and n7 are each independently integers of 1 to 4, n3 and n8 are each independently integers of 0 to 2, n4 and n9 are each independently integers of 1 to 4, n5 and n10 are each independently integers of 0 to 3, n4+n5 is an integer of 4 or less, and n9+n10 is an integer of 4 or less.