A strategic approach for the synthesis of new porphyrin rings, attractive for heme model purpose
摘要:
Novel complexes have been efficiently synthesized with a facile route using two different atropisomers of the same porphyrim. These compounds feature a tridentate binding site, a tyrosine molecule, and a proximal base, all bound to the porphyrin ring in different fashions, making them attractive for heme modeling purposes. (c) 2007 Elsevier Ltd. All rights reserved.
The present invention relates to a carbodiimide derivative represented by the following general formula: W.sub.1 --X--N.dbd.C.dbd.N--Y--W.sub.2 --Z wherein W.sub.1 is a straight chain, branched chain or cyclic saturated or unsaturated aliphatic hydrocarbon group, a substituted or unsubstituted aryl group, a heteroaryl group, tertiary amino group or a tertiary or quaternary ammonium group; --W.sub.2 --Z is a quaternary ammonium group; X and Y are each independently a single bond or an alkylene group; and Z is a biotin group represented by the following formula: ##STR1## wherein n is 0 or 1. The derivative is useful as a label reagent for introducing a biotin group into a nucleic acid or a protein.
currently used as ethylene response inducers. However, since ethylene is a gas, which limits its practical application, we targeted the development of a solid ethylene response inducer that could overcome this disadvantage. We performed chemical screening using Arabidopsis thaliana “triple response” as an indicator of ethylene response. After screening, we selected a compound with a thiourea skeleton and