Synthesis of the fungal natural product (−)-xylariamide A
摘要:
The first synthesis of the fungal natural product (-)-xylariamide A 1 is reported. N,O-Bis(trimethylsilyl)acetamide induced coupling Of D-tyrosine with (E)-but-2-enedioic acid 2,5-dioxo-pyrrolidin-1-yl ester methyl ester 5 produced the dechloro natural product 6, which was subsequently monochlorinated using oxone and KCl to yield synthetic 1. (-)-Xylariamide A 1, (+)-xylariamide A 2 and (-)-dechloroxylariamide A 6 displayed no cytotoxic or antimicrobial activity. (c) 2005 Elsevier Ltd. All rights reserved.
Synthesis and Tritium Labelling of 6β-Amino-4,5α-epoxymorphinans and their 14-hydroxy derivatives as potential affinity labelling probes with μ opioid agonist activity
The synthesis of 6β-(methylfumaramido) and 6β-chloroacetamido derivatives 1b and 1c of 6β-amino-7,8- didehydromorphinan and the corresponding 14-hydroxy derivatives 1e and 1f are described. The 7,8-dihydro derivatives of these compounds were synthesized in inactive (2b,c,e,f) as well as in tritiated form (3b,c,e,f).
[EN] HETEROCYCLIC GLP-1 AGONISTS<br/>[FR] AGONISTES HÉTÉROCYCLIQUES DE GLP-1
申请人:GASHERBRUM BIO INC
公开号:WO2022028572A1
公开(公告)日:2022-02-10
This disclosure relates to GLP-1 agonists of Formula (I), including pharmaceutically acceptable salts and solvates thereof, and pharmaceutical compositions including the same.
Isolation and Structure Elucidation of the New Fungal Metabolite (−)-Xylariamide A
作者:Rohan A. Davis
DOI:10.1021/np050025h
日期:2005.5.1
Chemical investigations of the terrestrial microfungus Xylaria sp. have afforded the new natural product (-)-xylariamide A (1). The gross structure of 1 was determined by interpretation of 1D and 2D NMR, UV, IR, and MS data. Confirmation of the structure and the absolute stereochemistry of 1 were determined by the total synthesis of (+)-xylariamide A (2). Synthetic 2 was produced by N,O-bis(trimet
Wave Chemistry: 2-(4′-Azido 3′,5′,6′-trifluoro 2′-Pyridyl)- Amino Ethylamine as a Key Photoactivatable Building Block with Wide Biological Applications