Abstract
As a FAD (Flavin Adenine Dinucleotide) - dependent histone demethylase discovered in 2004, LSD1 (lysine-specific demethylase 1) was reported to be overexpressed in diverse tumors, regulating target genes transcription associated with cancer development. Hence, LSD1 targeted inhibitors may represent a new insight in anticancer drug discovery. For these reasons, researchers in both the pharmaceutical industry and academia have been actively pursuing LSD1 inhibitors in the quest for new anti-cancer drugs. This review summaries patents about LSD1 inhibitors in recent 5 years in the hope of providing a reference for LSD1 researchers to develop new modulators of LSD1 with higher potency and fewer adverse effects. This review collects LSD1 inhibitors disclosed in patents since 2016. The primary ways of patent searching are Espacenet®, Google Patents, and CNKI. This review covers dozens of patents related to LSD1 inhibitors in recent five years. The compound structures are mainly divided into TCP (Tranylcypromine) derivatives, imidazole derivatives, pyrimidine derivatives, and other natural products and peptides. Meanwhile, the compounds that have entered the clinical phase are also described. Most of the compounds in these patents have been subjected to activity analysis with LSD1 and multi-cell lines, showing good antitumor activity in vitro and in vivo. These patents exhibited the structural diversity of LSD1 inhibitors and the potential of natural products as novel LSD1 inhibitors.
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