62563-15-9Relevant academic research and scientific papers
Zn(OTf)2-promoted chemoselective esterification of hydroxyl group bearing carboxylic acids
Mamidi, Narsimha,Manna, Debasis
, p. 2386 - 2396 (2013/05/21)
Selective esterification of aliphatic and aromatic carboxylic acids with various alcohols is studied using triphenylphosphine, I2, and a catalytic amount of Zn(OTf)2. Use of this catalyst allows the formation of esters at a faster rate with good to excellent yield by activating the in situ generated acyloxyphosphonium ion intermediate. During the esterification process, both their aromatic and aliphatic hydroxyl groups are fully preserved from transesterification. The results show that the bulkiness and the reactivity of this doubly activated intermediate III control the selectivity and the rate of the reaction, respectively. The method is also useful for direct amidation reactions.
Superoxide dismutase mimetics. Part 2: Synthesis and structure-activity relationship of glyoxylate- and glyoxamide-derived metalloporphyrins
Trova, Michael P.,Gauuan, Polivina Jolicia F.,Pechulis, Anthony D.,Bubb, Stephen M.,Bocckino, Stephen B.,Crapo, James D.,Day, Brian J.
, p. 2695 - 2707 (2007/10/03)
Novel glyoxylate- and glyoxamide-derived metalloporphyrins 26-58 were synthesized and evaluated as potential superoxide dismutase (SOD) mimetics. Relative to previously studied MnTBAP analogues, the glyoxylate-derived metalloporphyrins 32, 39, and 54 and glyoxamide-derived metalloporphyrin 49, exhibited enhanced activity in the SOD assay and the majority of the analogues in the current series showed enhanced inhibition of lipid peroxidation and catalase activity.
Substituted porphyrins
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, (2008/06/13)
The present invention relates, in general, to a method of modulating physiological and pathological processes and, in particular, to a method of modulating cellular levels of oxidants and thereby processes in which such oxidants are a participant. The invention also relates to compounds and compositions suitable for use in such methods. Compounds of the invention include those of Formula I.
