Conformationally locked chromophores of CFP and Sirius protein
作者:Nadezhda S. Baleeva、Aleksandra S. Tsarkova、Mikhail S. Baranov
DOI:10.1016/j.tetlet.2016.06.006
日期:2016.7
Recent works have demonstrated the potential of fluorescentproteinchromophores as useful dyes with unique photophysical properties. Herein, we report the synthesis of two novel highly fluorescentdyesbased on conformationallylockedchromophores of the fluorescentproteins CFP and Sirius. These novel synthetic dyes demonstrate high fluorescence quantum yields and pH-independence in the physiological
The multitalented synthetic reagent trimethyl aconitate (1) is a renewable raw material with a high density of functional groups that up to now has only been scarcely used as a C6 building block. Domino reactions with 1 consisting of imine additions and intramolecular acylations provide simple access to heteropolycycles in one-pot reactions. For example, 1 reacts with N-methylbenzylidenamine (2) to give the spiro[pyrrolidinone-3,3'-dihydropyrrolinone] 3 in 40 % yield.
Efficient Synthesis of New 4-Arylideneimidazolin-5-ones Related to the GFP Chromophore by 2+3 Cyclocondensation of Arylideneimines with Imidate Ylides
作者:Janusz Kowalik、Anthony Baldridge、Laren Tolbert
DOI:10.1055/s-0029-1218796
日期:2010.7
A 2+3 condensation of a wide assortment of Schiff bases, prepared from aromatic aldehydes and primary amines, with methyl 2-(1-ethoxyethylideneamino)acetate allows convenient access to an extensive family of substituted 4-arylideneimidazolin-5-one analogues of the green fluorescent protein (GFP) chromophore. 4-arylideneimidazolin-5-one - azomethine ylide - Schiff bases - heterocycle - 2+3 cycloaddition
Synthesis of novel trans-4-(phthalimidomethyl)- and 4-(imidazol-1-ylmethyl)-3-indolyl-tetrahydroisoquinolinones as possible aromatase inhibitors
作者:Nikola T. Burdzhiev、Todor I. Baramov、Elena R. Stanoeva、Stanislav G. Yanev、Tsveta D. Stoyanova、Diana H. Dimitrova、Kristina A. Kostadinova
DOI:10.1007/s11696-018-00677-7
日期:2019.5
The reaction of homophthalic anhydride with 1H-indol-3-carbaldimines was used for the preparation of trans- and cis-2-alkyl-3-indolyl-1-oxotetrahydroisoquinolin-4-carboxylic acids 3a–d. The stereochemistry of the reaction was investigated by means of 1H NMR spectroscopy. The carboxylic group of trans-3a–d was transformed stereoselectively via 4-hydroxymethyltetrahydroisoquinolin-1-ones into 4-(pht