An Alternative to Pictet-Gams Reaction Triggered by Hendrickson Reagent: Isoquinolines and β-Carbolines from Amides
作者:Shaozhong Wang、Mengde Wu
DOI:10.1055/s-0029-1217138
日期:2010.2
The Hendrickson reagent derived from triflic anhydride and triphenylphosphine oxide exhibited high oxophilicity and induced the intramolecular cyclization of β-arylethylamides perfectly. Thus, a one-pot protocol to access isoquinoline and β-carboline was developed involving cyclization followed by oxidative aromatization. Hendrickson reagent - isoquinoline - β-carboline - β-arylethylamide - manganese(IV)
INDOLE DERIVATIVES FOR TREATING NEURODEGENERATIVE DISEASES
申请人:Schmidt Fanny
公开号:US20110319387A1
公开(公告)日:2011-12-29
The invention relates to a compound of the following formula (I),
or to a pharmaceutically acceptable salt thereof or to a stereoisomer or mixture of stereoisomers at any proportions, where: X
1
is a CH
2
or C═O group; X
2
is a linear saturated or unsaturated carbohydrate chain with 8 to 24 carbon atoms; R
1
is a hydrogen atom or an OH or (C
1
-C
6
)alkoxy group such as methoxy; and R
2
is a CH
3
or CH
2
OR
3
group, with R
3
being a hydrogen atom or a (C
1
-C
6
)alkyl, CO—(C
1
-C
6
)alkyl or NH—(C
1
-C
6
)alkyl group. The invention also relates to the use of said compound as a drug, in particular for treating neurodegenerative diseases, and to a method for preparing same.
type alkaloids, labradorins 5 (1) and 6 (2), which were isolated and characterized from two isolates of Pseudomonas sp., along with four previously known tryptophane derived alkaloids. The structures of 1 and 2 were determined by NMR spectroscopy and MS, and confirmed by synthesis. During bioassay-guided isolation using several human bacterial pathogens, 1 and 2 displayed activity towards Staphylococcus