This work describes the enabling synthesis of tesirine, a pyrrolobenzodiazepine antibody–drug conjugate drug-linker. Over the course of four synthetic campaigns, the discovery route was developed and scaled up to provide a robust manufacturing process. Early intermediates were produced on a kilogram scale and at high purity, without chromatography. Midstage reactions were optimized to minimize impurity formation. Late stage material was produced and purified using a small number of key high-pressure chromatography steps, ultimately resulting in a 169 g batch after 34 steps. At the time of writing, tesirine is the drug-linker component of eight antibody–drug conjugates in multiple clinical trials, four of them pivotal.

中文翻译：

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替硝林的按比例放大合成

这项工作描述了能够合成合成的酪胺酸，一种吡咯并苯并二氮杂卓抗体-药物偶联物药物连接物。在四次合成运动过程中，开发了发现路线并扩大了规模，以提供可靠的制造过程。早期中间体以千克规模和高纯度生产，无需色谱。优化了中间阶段的反应，以最大程度地减少杂质的形成。使用少量关键的高压色谱步骤生产和纯化后期材料，最终在34个步骤后得到169 g批料。在撰写本文时，tesirine是多项临床试验中8种抗体-药物偶联物的药物连接物成分，其中4种是关键的。