Direct intramolecular amination of tryptophan esters to prepare pyrrolo[2,3-b]indoles
作者:Zhao-Ying Yang、Tian Tian、Ya-Fei Du、Shi-Yi Li、Cen-Cen Chu、Lu-Ying Chen、Dan Li、Jia-Yi Liu、Bin Wang
DOI:10.1039/c7cc03983b
日期:——
A metal-free iodine-catalyzed intramolecular amination has been developed for the practical synthesis of pyrrolo[2,3-b]indoles from readily available tryptophan esters. The transformation has been applied to a wide array of substrates and can be performed on gram scale under very mild conditions.
已经开发了一种无金属的碘催化的分子内胺化方法,用于从容易获得的色氨酸酯中实际合成吡咯并[2,3- b ]吲哚。该转化已应用于各种各样的底物,并且可以在非常温和的条件下以克为单位进行转化。
Substituted cyclohexane-1,4-diamine compounds with anti-diarrhea and peripheral analgesic activity
申请人:Gruenenthal GmbH
公开号:US20040229872A1
公开(公告)日:2004-11-18
The use of substituted cyclohexan-1,4-diamine compounds in pharmaceutical compositions and for the treatment of diarrhea or irritable bowel diseases or as immunotherapeutic agents or peripheral analgesics, especially for treating burn pains, peripheral operation pains, pains generated by inflammation of soft tissues or inflammatory arthropathies, especially rheumatisms.
Drug to Genome to Drug: Discovery of New Antiplasmodial Compounds
作者:Terence B. Beghyn、Julie Charton、Florence Leroux、Guillaume Laconde、Arnaud Bourin、Paul Cos、Louis Maes、Benoit Deprez
DOI:10.1021/jm1014617
日期:2011.5.12
The dominant strategy for discovery of new antimalarial drugs relies on cell-free assays on specific biochemical pathways of Plasmodium falciparum . However, it appears that screening directly on the parasite is a more rewarding approach. The "drug to genome to drug" approach consists of testing a small set of structural analogues of a drug acting on human proteins that have plasmodial orthologues. Both man and plasmodium possess cyclic nucleotide phosphodiesterases (PDEs) that are key players of cell homeostasis. We synthesized and tested 40 analogues of tadalafil, a human PDE5 inhibitor, on P. falciparum in culture and obtained potent inhibitors of parasite growth. We discuss the structure-activity relationships, which support the hypothesis that our compounds kill the parasite via inhibition of plasmodial PDE activity. We also prove that antiplasmodial derivatives inhibit the hydrolysis of cyclic nucleotides of the parasite, validating the cAMP/cGMP pathways as therapeutic targets against Plasmodium falciparum .
Synthesis of 6-substituted indolactams by microbial conversion
New indolactam derivatives (24-27) with a fluorine, bromine, iodine or methyl group at position 6 of (-)-indolactam-V (1) were synthesized from corresponding seco-compounds (6-substituted N-methyl-L-valyl-L-tryptophanols) by the microbial conversion using Streptoverticilium blastmyceticum NA34-17. (-)-5-Fluoroindolactam-V (23) and (-)-7-methylindolactam-V (28) were similarly obtained by this method. (-)-6-Methylindolactam-V (27) had almost the same biological activities as (-)-7-methylindolactam-V (28), indicating that the substituent effect at position 6 of (-)-indolactam-V (1) is similar to that at position 7.