Synthesis 2019; 51(18): 3556-3566
DOI: 10.1055/s-0037-1611540
paper
© Georg Thieme Verlag Stuttgart · New York

Linear and Convergent Syntheses of Bifunctional Hydroxy-Bisphosphonic Compounds as Potential Bone-Targeting Prodrugs

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We thank the Ministère de l’Enseignement Supérieur de la Recherche et de l’Innovation for Ph.D. financial support.
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Publikationsverlauf

Received: 09. Januar 2019

Accepted after revision: 17. April 2019

Publikationsdatum:
14. Mai 2019 (online)


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This article is dedicated to the memory of our colleague and friend Dr. Marc Padrines.

Abstract

The synthesis of two bifunctional compounds bearing a terminal hydroxy-bisphosphonic function (HBP) was achieved following a linear and a convergent strategy. In the linear approach, the free hydroxy-bisphosphonic function was introduced in the last step of the synthesis, under neutral conditions using an Arbuzov reaction with tris(trimethylsilyl) phosphite and a carboxylic acid precursor activated in situ with catecholborane. In the convergent approach, Huisgen type cycloaddition was studied starting from an HBP-functionalized alkyne partner to obtain the targeted bifunctional molecule. These complementary approaches allow for the preparation of complex bone-targeting molecules as potential prodrug candidates.

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