[EN] TRACELESS REDUCTIVELY CLEAVABLE LINKER MOLECULES FOR PEPTIDE PURIFICATION [FR] MOLÉCULES DE LIAISON SANS TRACE CLIVABLES PAR RÉDUCTION POUR PURIFICATION DE PEPTIDES
PHENOL DERIVATIVE AND PREPARATION METHOD AND USE IN MEDICINE THEREOF
申请人:Sichuan Haisco Pharmaceutical Co., Ltd.
公开号:US20160060197A1
公开(公告)日:2016-03-03
The present invention relates to a phenol derivative and the preparation method and use in medicine thereof, and particular to a phenol derivative represented by general formula (A) or a stereoisomer, a solvate, a metabolite, a prodrug, a pharmaceutically acceptable salt or a cocrystal thereof, a preparation method thereof, a pharmaceutical composition comprising the same, and use of the compound or composition of the present invention in the field of the central nervous system; wherein the definitions of substituents in general formula (A) are the same as those in the Description.
procedures for the preparation of more complex aminooxy-peptides. We have studied the coupling of modified Fmoc-lysine containing either N-Boc- or N,N‘-bis-Boc-protected aminooxyacetic acids (Aoa) during the elongation of the peptide chain and found that none of them is adequate. To circumvent this limitation, we propose to protect the Aoa moiety with a 1-ethoxyethylidene group (Eei) to provide 2-(1-ethoxye
arginine-glycine-aspartic acid) peptides as specific αvβ3 binders were synthesized and tagged with a silicon-fluorine-acceptor (SiFA) moiety. The SiFA synthon allows for a fast and highly efficient isotopic exchange reaction at room temperature giving the [18F]fluoride labeledpeptides in up to 62% radiochemical yields (d.c.) and ≥99% radiochemical purity in a total synthesis time of less than 20 min. Using
胃泌素释放肽(GRP) -受体和α v β 3个-integrins作为与正电子发射断层扫描(PET)成像肿瘤潜在目标结构广泛的讨论。由于肿瘤细胞表面受体的过度表达,使用高度特异性的放射性标记受体配体可以实现良好的成像特性。PEG化的铃蟾肽(PESIN)衍生物作为具体的GRP受体配体和RGD(精氨酸-甘氨酸-天门冬氨酸的单字母代码)肽作为具体α v β 3个结合物合成和标记的与硅-氟-受体(SIFA)部分。SiFA synthon可以在室温下进行快速高效的同位素交换反应,从而得到[ 18F]氟化物标记的肽,在不到20分钟的总合成时间内,放射化学产率(dc)高达62%,放射化学纯度≥99%。使用纳摩尔量的前体,可获得高达60 GBqμmol –1的高比活。为了补偿SiFA部分的高亲脂性,引入了各种亲水结构修饰,从而导致logD值显着降低。与PESIN衍生物竞争性置换的实验表明在32至6nm亲
Flexible synthesis of cationic peptide–porphyrin derivatives for light-triggered drug delivery and photodynamic therapy
作者:R. Dondi、E. Yaghini、K. M. Tewari、L. Wang、F. Giuntini、M. Loizidou、A. J. MacRobert、I. M. Eggleston
DOI:10.1039/c6ob02135b
日期:——
chemistries. This provides a flexible means to convert essentially hydrophobic tetrapyrolle photosensitisers into amphiphilic derivatives which are well-suited for use in light-triggered drug delivery by photochemical internalisation (PCI) and targeted photodynamictherapy (PDT).
The present invention relates to antibody-drug conjugates comprising (i) an antibody or antigen-binding fragment thereof, (ii) a polymer comprising a particular repeat unit comprising an amino acid derivative, which is covalently bound to one or more biologically active moieties, such as small molecule drugs, optionally via a linker, and (iii) a polymer-antibody linker moiety which is covalently bound to both the polymer and the antibody or antigen-binding fragment thereof. Additionally, the present invention relates to pharmaceutical compositions comprising the antibody-drug conjugates and to use of the antibody-drug conjugates in medicine.