γ-Valerolactone (GVL): An eco-friendly anchoring solvent for solid-phase peptide synthesis
作者:Othman Al Musaimi、Ayman El-Faham、Alessandra Basso、Beatriz G. de la Torre、Fernando Albericio
DOI:10.1016/j.tetlet.2019.151058
日期:2019.9
authorities have imposed restrictions to minimize or even stop its use. It has therefore become imperative to identify environmentally benign solvents to replace it. Here we report on a bio derived solvent, γ-valerolactone, for the incorporation of the first aminoacid onto p-alkoxybenzyl alcohol resin in solid-phasepeptidesynthesis. Satisfactory loading values (by a spectrophotometric method) were
[EN] NOVEL ANTIMALARIAL COMPOUNDS, PROCESS FOR PREPARATION AND THEIR USE FOR DRUG RESISTANT MALARIA<br/>[FR] NOUVEAUX COMPOSÉS ANTIPALUDIQUES, LEUR PROCÉDÉ DE PRÉPARATION ET LEUR UTILISATION POUR LE PALUDISME RÉSISTANT AUX MÉDICAMENTS
申请人:COUNCIL SCIENT IND RES
公开号:WO2019202609A1
公开(公告)日:2019-10-24
The present invention provides a new artemisinin-dipeptidyl vinyl based compound of Formula (I) or a pharmaceutically acceptable salt thereof and a process for the preparation thereof. The present invention further also provides a pharmaceutical composition comprising compounds of Formula (I) or a pharmaceutically acceptable salt thereof, and a pharmaceutically acceptable carrier, diluent or excipient to treat malaria.
Der 2.2.2-Trifluor-1-benzyloxycarbonylamino-äthyl-Rest ist zum Schutz derHydroxylgruppendesSerinsundThreonins hervorragend geeignet. Er ist durch Umsetzung von N-Acyl-aminosäure- oder N-Acyl-peptidderivaten mit 2.2.2-Trifluor-1-chlor-N-benzyloxycarbonyl-äthylamin leicht einführbar und läßt sich durch katalytische Hydrierung oder mit HBr/Eisessig bzw. HF wieder abspalten.
A drug conjugate is provided herein. The conjugate comprises a protein based recognition-molecule (PBRM) and a polymeric carrier substituted with one or more -L
D
-D, the protein based recognition-molecule being connected to the polymeric carrier by L
P
. Each occurrence of D is independently a therapeutic agent having a molecular weight ≦5 kDa. L
D
and L
P
are linkers connecting the therapeutic agent and PBRM to the polymeric carrier respectively. Also disclosed are polymeric scaffolds useful for conjugating with a PBRM to form a polymer-drug-PBRM conjugate described herein, compositions comprising the conjugates, methods of their preparation, and methods of treating various disorders with the conjugates or their compositions.
Electrochemical Recycling of Adenosine Triphosphate in Biocatalytic Reaction Cascades
作者:Serge Ruccolo、Gilmar Brito、Melodie Christensen、Tetsuji Itoh、Keith Mattern、Kevin Stone、Neil A. Strotman、Alexandra C. Sun
DOI:10.1021/jacs.2c08955
日期:2022.12.14
triphosphate (ATP) provides the driving force necessary for critical biological functions in all living organisms. In synthetic biocatalytic reactions, this cofactor is recycled in situusing high-energy stoichiometric reagents, an approach that generates waste and poses challenges with enzyme stability. On the other hand, an electrochemical recycling system would use electrons as a convenient source of
三磷酸腺苷 (ATP) 为所有生物体的关键生物学功能提供必要的驱动力。在合成生物催化反应中,这种辅助因子使用高能化学计量试剂原位回收,这种方法会产生废物并对酶的稳定性提出挑战。另一方面,电化学回收系统将使用电子作为方便的能源。我们报告了一种在简化的细胞呼吸模拟中使用电来转换酶以生成 ATP 的方法。该方法简单、稳健且可扩展,并且广泛适用于复杂的酶促过程,包括抗病毒药物 molnupiravir 合成中的四酶生物催化级联。