RNAi Agents for Inhibiting Expression of HIF-2 alpha (EPAS1), Compositions Thereof, and Methods of Use
申请人:Arrowhead Pharmaceuticals, Inc.
公开号:US20220204976A1
公开(公告)日:2022-06-30
The present disclosure relates to RNAi agents, for example, double stranded RNAi agents, able to inhibit HIF-2 alpha (EPAS1) gene expression. Also disclosed are pharmaceutical compositions that include HIF-2 alpha RNAi agents and methods of use thereof. The HIF-2 alpha RNAi agents disclosed herein may be linked or conjugated to targeting ligands (such as compounds that have affinity for integrins, including alpha-v-beta-3 and alpha-v-beta-5 integrins) and pharmacokinetic (PK) enhancers, to facilitate the delivery to cells and tissues, including to clear cell renal cell carcinoma (ccRCC) cells and tumors. Delivery of compositions comprising the HIF-2 alpha RNAi agents in vivo provides for inhibition of HIF-2 alpha gene expression. The HIF-2 alpha RNAi agents can be used in methods of treatment of various diseases and disorders, including ccRCC.
Palladium(II)-Catalyzed Site-Selective C(sp<sup>3</sup>
)−H Alkynylation of Oligopeptides: A Linchpin Approach for Oligopeptide-Drug Conjugation
作者:Tao Liu、Jennifer X. Qiao、Michael A. Poss、Jin-Quan Yu
DOI:10.1002/anie.201706367
日期:2017.8.28
C(sp3)−H alkynylation of oligopeptides was developed with tetrabutylammonium acetate as a key additive. Through molecular design, the acetylene motif served as a linchpin to introduce a broad range of carbonyl‐containing pharmacophores onto oligopeptides, thus providing a chemical tool for the synthesis and modification of novel oligopeptide–pharmacophore conjugates by C−H functionalization. Dipeptide
以乙酸四丁基铵为关键添加剂,开发了钯 (II) 催化的寡肽 C(sp 3 )−H 炔基化反应。通过分子设计,乙炔基序作为关键,将多种含羰基的药效团引入到寡肽上,从而为通过CH官能化合成和修饰新型寡肽-药效团缀合物提供了化学工具。通过该方法合成了与粪甾烷醇和雌二醇的二肽缀合物,其在向核激素受体过度表达的肿瘤细胞靶向药物递送方面具有潜在的应用。
Toubiana,R., Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences, 1961, vol. 253, p. 2989 - 2991