Disulfide bonds are a significant motif in life and drug-delivery systems. In particular, steric hindrance and stereoscopic disulfide linkers are closely associated with the stability of antibody–drug conjugates, which affects the potency, selectivity, and pharmacokinetics of drugs. However, limited availability and diversity of tertiary thiols impede the construction of steric and stereoscopic disulfides for cross-linkage in biochemistry and pharmaceuticals. Through modulating the mask effect of disulfurating reagents, we develop a facile and robust strategy for construction of diverse steric and stereoscopic disulfides via N-dithiophthalimides. The practical cross-linkage of biomolecules including amino acids, saccharides, and nucleosides with different drugs and fluorescent molecules is successfully established through hindered disulfide linkers.

中文翻译：

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通过N-二硫代邻苯二甲酰亚胺进行交联的立体和立体二硫化物结构

二硫键是生命和药物输送系统中的重要主题。特别是，位阻和立体二硫键与抗体-药物偶联物的稳定性密切相关，这会影响药物的效力，选择性和药代动力学。但是，叔硫醇的可用性和多样性有限，阻碍了在生物化学和药物中用于交联的空间和立体二硫化物的构建。通过调节脱硫试剂的掩膜效应，我们开发了一种简便而稳健的策略，可通过N构建多种空间和立体二硫化物。-二硫代邻苯二甲酰亚胺。通过受阻的二硫键成功地建立了包括氨基酸，糖类和核苷在内的生物分子与不同药物和荧光分子的实际交联。