Sulfonate Version of OHPAS Linker Has Two Distinct Pathways of Breakdown: Elimination Route Allows Para-Hydroxy-Protected Benzylsulfonate (PHP-BS) to Serve as an Alternative Self-Immolative Group

Autor: Jina Song, Hyang Sook Lee, Beomseok Seo, Sun-Young Kim, Suho Park, Donghoon Seo, Okku Park, Doohwan Jung, Jongun Cho, Sanghyeon Yun, Jaeho Lee, Ha Jihyeon, Sangkwang Lee, Minah Seol, Tae Kyo Park, Kim Sena
Rok vydání: 2020
Předmět:
Zdroj: Bioconjugate Chemistry. 31:1392-1399
ISSN: 1520-4812
1043-1802
Popis: Recently we have reported that the ortho-hydroxy-protected aryl sulfate (OHPAS) system can be exploited as a new self-immolative group (SIG) for phenolic payloads. We extended the system to nonphenolic payloads by simply introducing a para-hydroxy benzyl (PHB) spacer. As an additional variation of the system, we explored a benzylsulfonate version of the OHPAS system and found that it has two distinct breakdown pathways, cyclization and 1,4-elimination, the latter of which implies that para-hydroxy-protected (PHP) benzylsulfonate (BS) can also be used as an alternative SIG. The PHP-BS system was found to be stable chemically and in mouse and human plasma, having payload release rates comparable to those of the original OHPAS conjugates.
Databáze: OpenAIRE