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An Efficient Method for the Conjugation of Hydrophilic and Hydrophobic Components by Solid‐Phase‐Assisted Disulfide Ligation

Abstract

Chemical conjugation between hydrophilic and hydrophobic components is difficult because of their extremely different solubility. Herein, we report a new versatile method with a solid‐phase‐assisted disulfide ligation to overcome the difficulty of conjugation attributed to solubility. The method involves two steps in a one‐pot process: 1) loading of a hydrophobic molecule onto a resin in an organic solvent, and 2) release of the solid‐supported hydrophobic molecule as a conjugate with a hydrophilic molecule into an aqueous solvent. This strategy allows the use of a suitable solvent system for the substrates in each step. Conjugates of a water‐insoluble drug, plinabulin, with hydrophilic carriers that could not be prepared by solution‐phase reactions were obtained in moderate yields (29–45 %). This strategy is widely applicable to the conjugation of compounds with solubility problems.

Solid‐phase‐assisted disulfide ligation has been developed to overcome the difficulty of conjugation between hydrophilic and hydrophobic components attributed to solubility. Conjugates of a poorly water‐soluble model drug, plinabulin, with various hydrophilic carriers were obtained in moderate yields.

Autoren:   Kyohei Muguruma, Takuya Shirasaka, Daichi Akiyama, Kentarou Fukumoto, Akihiro Taguchi, Kentaro Takayama, Atsuhiko Taniguchi, Yoshio Hayashi
Journal:   Angewandte Chemie International Edition
Jahrgang:   2018
Seiten:   n/a
DOI:   10.1002/anie.201712324
Erscheinungsdatum:   19.01.2018
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