Diketopyrrolopyrrole Bis‐Phosphonate Conjugate: A New Fluorescent Probe for In Vitro Bone Imaging
作者:Andrea Chiminazzo、Giuseppe Borsato、Alessia Favero、Chiara Fabbro、Charles E. McKenna、Luca Giuseppe Dalle Carbonare、Maria Teresa Valenti、Fabrizio Fabris、Alessandro Scarso
DOI:10.1002/chem.201805436
日期:2019.3.7
The synthesis of a conjugate molecule between an unusual red‐fluorescentdiketopyrrolopyrrole (DPP) unit and a bis‐phosphonate (BP) precursor by a click‐chemistry strategy to target bone tissue and monitor the interaction is reported. After thorough investigation, conjugation through a triazole unit between a γ‐azido rather than a β‐azido BP and an alkyne‐functionalized DPP fluorophore group turned
[EN] FLUORESCENT BISPHOSPHONATE ANALOGS<br/>[FR] ANALOGUES DE BISPHOSPHONATES FLUORESCENTS
申请人:UNIV SOUTHERN CALIFORNIA
公开号:WO2016161407A1
公开(公告)日:2016-10-06
Fluorescent probes based on N-heterocyclic bisphosphonates or their phosphonocarboxylate analogues are provided. The probes have variable spectroscopic properties, bone mineral binding affinities, and pharmacological activities. Methods for preparing the probes include the use of two complementary linking strategies, one involving an amino group and the other involving a chloride group as a precursor to an amino group. In other versions, bifunctional N-heterocyclic bisphosphonates are provided having an amino group and an azido group as linking moieties. In some versions, the linking chemistry allows attachment of a wide selection of fluorescent dyes in the visible to near-infrared range to any of three clinically important heterocyclic bisphosphonates.
A practical and efficient one-pot method for synthesis of a novel kind of N-attached 1,2,3-triazole-containing bisphosphonates was developed. Michael addition reaction of sodium azide with ethylidene bisphosphonates and 1,3-dipolar click cycloaddition were reasonably integrated into one-pot reaction in the presence of sonication. Vinylidene bisphosphonate, NaN3, and terminal alkyne were employed as
开发了一种实用且有效的一锅法,用于合成新型的含N的1,2,3-三唑双膦酸酯。在超声处理下,叠氮化钠与亚乙基双膦酸酯的迈克尔加成反应和1,3-偶极点击环加成被合理地整合到一锅反应中。使用亚乙烯基双膦酸酯,NaN 3和末端炔烃作为反应物,使用CuSO 4 ·5H 2 O抗坏血酸钠作为催化剂体系,并使用AcOH / H 2 O(1:1 v / v)作为溶剂体系创造一个酸性环境以获得最佳效率。