Simple Methodology for Syntheses of Porphyrins Possessing Multiple Peripheral Substituents with an Element of Symmetry
摘要:
New methodology was developed for synthesis of regiochemically pure porphyrins with D-2h symmetry (e.g. 9) via tetramerization reactions involving two different pyrroles. The two pyrrole components were a 2,5-diunsubstituted pyrrole (e.g. 11) and a 2,5-bis[(N,N-dimethylamino)methyl]pyrrole (e.g, 10), the latter being formed from a 2,5-di-unsubstituted pyrrole by treatment with excess Eschenmoser's reagent (N,N-dimethylmethyleneammonium iodide). A bis-butanoporphyrin 16 was transformed into the corresponding opp-bis-benzoporphyrin 17 by treatment with DDQ. The synthetic method was further extended to allow the synthesis of more unsymmetrical porphyrins, with C-2v symmetry (e.g. 32), by reacting a tripyrrane (e.g. 27) with a 2,5-bis[(N,N-dimethylamino)methyl]pyrrole (e.g. 18). The structures and substituent arrays in both type of porphyrins were confirmed by single-crystal X-ray crystallography.
Synthesis and Structure–Activity Relationships of Tambjamines and B-Ring Functionalized Prodiginines as Potent Antimalarials
作者:Papireddy Kancharla、Jane Xu Kelly、Kevin A. Reynolds
DOI:10.1021/acs.jmedchem.5b00560
日期:2015.9.24
Synthesis and antimalarial activity of 94 novel bipyrrole tambjamines (TAs) and a library of B-ring functionalized tripyrrole prodiginines (PGs) against a panel of Plasmodium falciparum strains are described. The activity and structure–activity relationships demonstrate that the ring-C of PGs can be replaced by an alkylamine, providing for TAs with retained/enhanced potency. Furthermore, ring-B of
[EN] TAMBJAMINES AND B-RING FUNCTIONALIZED PRODIGININES<br/>[FR] TAMBJAMINES ET PRODIGININES FONCTIONNALISÉES À CYCLE B
申请人:UNIV PORTLAND STATE
公开号:WO2016176450A1
公开(公告)日:2016-11-03
Embodiments of tambjamines and B-ring functionalized prodiginines are disclosed. Methods of synthesizing and using the disclosed compounds are also disclosed. Some embodiments of the disclosed compounds have antimalarial activity. Certain embodiments of the disclosed compounds have been shown to clear parasitemia in mice, and/or are curative in a single dose without toxicity.
This invention relates to imaging nanoprobe and methods of use thereof. Specifically, the invention relates to long-lived oxygen-insensitive nanoprobe comprising a lumisescent moeity with a long excited state lifetime, embedded in a dendrimer, wherein said dendrimer is internally cross-linked and has hydrophilic peripheral layer.
[EN] 1,1-DISUBSTITUTED CYCLOALKYL DERIVATIVES AS FACTOR XA INHIBITORS<br/>[FR] DERIVES CYCLOALKYLES 1,1-DISUBSTITUES UTILISES EN TANT QU'INHIBITEURS DU FACTEUR XA
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2003099276A1
公开(公告)日:2003-12-04
The present application describes 1,1-disubstituted cycloalkyl compounds and derivatives thereof, or pharmaceutically acceptable salt forms thereof, which are useful as inhibitors of factor Xa.
There is disclosed a process process for producing a cyclopropanecarboxylate of formula (1):
1
which process comprises reacting cyclopropanecarboxylic acid of formula (2):
2
with a monohydroxy compound of formula (3):
R
6
OH (3),
in the presence of a catalyst compound comprising an element of to Group 4 of the Periodic Table of Elements.