Appending a Tris-imidazole Ligand with a Tyr244 Mimic on the Distal Face of Bromoacetamidoporphyrin
摘要:
Bromoacetamidoporphyrin is a convenient synthon for the attachment of distal superstructures at room temperature in good yields. New models are presented that contain a tris-imidazole distal ligand set bound to the porphyrin in either a binary or trinary fashion. More importantly, one distal imidazole is cross-linked to a phenol mimicking Tyr(244), making this model the closest structural analogue yet reported of the metal free cytochrome c oxidase (CcO) active site.
A general method for coupling unprotected peptides to bromoacetamido porphyrin templates
摘要:
An N-terminal cysteine is used to displace bromide from a bromoacetylated porphyrin to yield a thioether linkage between the peptide and the template. Unlike amide coupling reactions, this approach should be compatible with any peptide sequence provided there is only a single cysteine.
Method and compositions for identifying anti-HIV therapeutic compounds
申请人:Arimilli N. Murty
公开号:US20050239054A1
公开(公告)日:2005-10-27
Methods are provided for identifying anti-HIV therapeutic compounds substituted with carboxyl ester or phosphonate ester groups. Libraries of such compounds are screened optionally using the novel enzyme GS-7340 Ester Hydrolase. Compositions and methods relating to GS-7340 Ester Hydrolase also are provided.
[EN] HEMATOPOIETIC GROWTH FACTOR MIMETIC SMALL MOLECULE COMPOUNDS AND THEIR USES<br/>[FR] COMPOSÉS À PETITES MOLÉCULES MIMÉTIQUES DES FACTEURS DE CROISSANCE HÉMATOPOÏÉTIQUE ET LEURS UTILISATIONS
申请人:LIGAND PHARM INC
公开号:WO2011046954A1
公开(公告)日:2011-04-21
The present embodiments relate to compounds with physiological effects, such as the activation of hematopoietic growth factor receptors. The present embodiments also relate to use of the compounds to treat a variety of conditions, diseases and ailments such as hematopoietic conditions and disorders.
Synthesis of iron(<scp>II</scp>)‘C<sub>2</sub>-capped strapped’ porphyrin complexes and their reaction with dioxygen
作者:Jack E. Baldwin、James H. Cameron、Maxwell J. Crossley、Ian J. Dagley、Simon R. Hall、Thomas Klose
DOI:10.1039/dt9840001739
日期:——
species which can be directly reduced back to the active iron(II) form. The affinities of the complexes for dioxygen have been determined. The relatively low affinities of these new complexes are ascribed to inhibition of the motion of the iron(II), which must occur on the binding of O2. This is due to the locking of the complex in a ‘domed’ configuration, enhanced by the strapping group, and to unfavourable
描述了基于C 2封端的卟啉酸酯配体,“ C 2封端的带状”配体的潜在的五齿配体的合成,其中“带状”基团具有吡啶官能团。配体的铁(II)配合物在室温下于甲苯溶液中经历可逆的氧合,并显示出对自氧化的良好稳定性。有趣的是,分解产物不是µ-oxo二聚体,而是铁(III)物种,可以直接还原成活性铁(II)形式。已经确定了配合物对双氧的亲和力。这些新配合物的亲和力相对较低归因于抑制铁的运动(II),这必须发生在O 2的结合上。这是由于将复合物锁定在“带状”构型中,并通过捆扎基团增强,并且由于捆扎基团与母体卟啉之间的空间相互作用不利。
Catalytic asymmetric synthesis of Pt- and Pd-PCP pincer complexes bearing a para-N pyridinyl backbone
作者:Esther Hui Yen Wong、Yu-Xiang Jia、Yongxin Li、Sumod A. Pullarkat、Pak-Hing Leung
DOI:10.1016/j.jorganchem.2018.03.010
日期:2018.5
A diastereoselective catalytic asymmetric hydrophosphination reaction was performed using a palladacycle catalyst to produce chiral PCP phosphine ligand with high dr (95:5) and excellent enantioselectivity (>99% ee). Subsequent facile metalation of the chiral ligand with Pt and Pd metal salts yielded the desired pincercomplexes. The protonated form of these pincercomplexes was also synthesised, and
Antiaggregatorische und anticoagulante Eigenschaften von Oligoaminen, 8. Mitt.: Oligoamine mit N-heterocyclischen Teilstrukturen
作者:Klaus Rehse、Stephan Mletzko
DOI:10.1002/ardp.19883210908
日期:——
Es wurden 19 Oligoaminemit Pyridyl‐, Pyrrolyl‐, Imidazolyl‐, Pyrazolyl‐, Piperidinyl‐, Piperazinyl‐ und Pyrrolidinylteilstrukturen dargestellt. Von diesen hemmten 13 die durch Collagen induzierte Thrombocytenaggregation in Konzentrationen von 20–80 μmol/L halbmaximal. Die Einführung basischer (pKB < 7) Funktionen in den hydrophoben Substituenten der Oligoamine führte zu meist drastischem Wirkungsabfall