Access to Enantiopure α-Hydrazino Acids for <i>N</i>-Amino Peptide Synthesis
作者:Chang Won Kang、Matthew P. Sarnowski、Yassin M. Elbatrawi、Juan R. Del Valle
DOI:10.1021/acs.joc.6b02718
日期:2017.2.3
amide substituents have received less attention due, in part, to the lack of practical synthetic strategies. Here, we report the synthesis of α-hydrazino acids derived from 19 out of the 20 canonical proteinogenic amino acids and demonstrate their use in the solid-phase synthesis of N-amino peptide derivatives.
Methods of inhibiting HSP70 proteins, agents causing the inhibition of HSP70 proteins, and the effects of such inhibition on cell proliferation. Anti-microbial agents comprising small molecules, or pharmaceutical salts thereof, disclosed herein and further methods of use thereof are also disclosed. The disclosed small molecules, or pharmaceutical salts thereof, are effective in inhibiting microbial chaperone activity in microbes, such as homologs of HSP70. The disclosed small molecules, or pharmaceutical salts thereof, are also effective for the therapeutic treatment of cancer.
Convergent Palladium-Catalyzed Stereospecific Arginine Glycosylation Using Glycals
作者:Jun Yang、Yuanwei Dai、Ryan Bartlett、Qiang Zhang
DOI:10.1021/acs.orglett.1c01218
日期:2021.5.21
peptide arginine glycosylation method is reported for the first time. A recently discovered arginine glycosylation invigorated the interests of arginine modification, which has been challenging, because of the inertness of the guanidino side chain. The approach renders the arginine glycoside construction convergently. Catalyzed by palladium complex, glycals modify arginineguanidinogroups in one step
The present disclosure provides NO-releasing guanidine-chromene conjugates, having the structure of Formula (I):
wherein R
1
, R
2
, R
3
, R
4
, R
10
, and L are as defined in the detailed description; pharmaceutical compositions comprising at least one of the compounds of Formula (I); and methods useful for healing wounds, preventing and treating cancer, or treating actinic keratosis, cystic fibrosis, acne, or a disease mediated by arginine deficiency using a compound of Formula (I).
[EN] NP-1 ANTAGONISTS AND THEIR THERAPEUTIC USE<br/>[FR] ANTAGONISTES DE NP-1 ET LEUR UTILISATION THÉRAPEUTIQUE
申请人:ARK THERAPEUTICS LTD
公开号:WO2011024001A1
公开(公告)日:2011-03-03
Compounds of formula (I): or a pharmaceutically acceptable salt thereof, wherein: W is arylene, heteroarylene or formula (a) each L is independently alkylene, alkenylene, alkynylene, a direct bond, arylene, cycloalkylene, alkylene-arylene, alkylene-C=O or-C=O; each X is independently an N-containing heteroarylene, N-containing cycloalkylene or NR; Y is N-containing heteroaryl, N-containing cycloalkyl, NR2, OR1, CN or CO2R; Z1 is formula (b); are useful in therapy, particularly in the therapy of neurodegeneration and cancer.