PMID- 30658235 OWN - NLM STAT- MEDLINE DCOM- 20200203 LR - 20200203 IS - 1090-2120 (Electronic) IS - 0045-2068 (Linking) VI - 85 DP - 2019 Apr TI - Orobanone analogues from acid-promoted aromatization rearrangement of curcumol inhibit hypoxia-inducible factor-1 (HIF-1) in cell-based reporter assays. PG - 357-363 LID - S0045-2068(18)31089-7 [pii] LID - 10.1016/j.bioorg.2019.01.013 [doi] AB - In this paper, the mechanism of orobanone analogues formation via aromatization rearrangement of curcumol was minutely explored. Aromatization of curcumol with acetone under acidic condition was selected as the model reaction. The formation of a stable aromatic system was the driving force for this reaction. Based on the model reaction, other four new orobanone analogues were prepared through curcumol reacting with different carbonyl compounds. The results showed that the stability of carbocation, which was generated from the carbonyl compounds, and the steric hindrance were main factors affecting the aromatization. We also synthesized the analogue of aromaticane B using compound 2. In vitro anti-proliferative activity of some derivatives were tested by MTT assay. Two derivatives showed weak anti-tumor effect on two cancer cell lines (HepG2 and MCF7) under normoxia. Four orobanone analogue 2, 5, 6 and 9 significantly inhibited hypoxia-induced HIF-1 luciferase reporter activity in HeLa cells with the IC(50) values of 13.6, 6.6, 2.4 and 18.2 muM, respectively. CI - Copyright (c) 2019 Elsevier Inc. All rights reserved. FAU - Li, Yue-Qing AU - Li YQ AD - School of Pharmaceutical Science and Technology, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China. FAU - Li, Guang-Zhe AU - Li GZ AD - School of Pharmaceutical Science and Technology, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China. Electronic address: liguangzhe@dlut.edu.cn. FAU - Dong, Yi AU - Dong Y AD - School of Pharmaceutical Science and Technology, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China. FAU - Ma, Xu AU - Ma X AD - School of Pharmaceutical Science and Technology, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China. FAU - Dong, Hui-Juan AU - Dong HJ AD - School of Pharmaceutical Science and Technology, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China. FAU - Wu, Qian-Qian AU - Wu QQ AD - School of Pharmaceutical Science and Technology, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China. FAU - Zhao, Wei-Jie AU - Zhao WJ AD - School of Pharmaceutical Science and Technology, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China; State Key Laboratory of Fine Chemicals, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China. Electronic address: zyzhao@dlut.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190110 PL - United States TA - Bioorg Chem JT - Bioorganic chemistry JID - 1303703 RN - 0 (Antineoplastic Agents) RN - 0 (Hypoxia-Inducible Factor 1) RN - 0 (Sesquiterpenes) RN - 9190RTN07X (curcumol) SB - IM MH - Antineoplastic Agents/chemical synthesis/pharmacology MH - Cell Hypoxia/physiology MH - Cell Line, Tumor MH - Cell Proliferation/drug effects MH - Humans MH - Hypoxia-Inducible Factor 1/*antagonists & inhibitors/genetics MH - Sesquiterpenes/chemical synthesis/*pharmacology MH - Transcription, Genetic/drug effects OTO - NOTNLM OT - Acid catalysis OT - Aromatization OT - Curcumol OT - HIF-1 transcription OT - Orobanone EDAT- 2019/01/19 06:00 MHDA- 2020/02/06 06:00 CRDT- 2019/01/19 06:00 PHST- 2018/09/28 00:00 [received] PHST- 2018/12/29 00:00 [revised] PHST- 2019/01/06 00:00 [accepted] PHST- 2019/01/19 06:00 [pubmed] PHST- 2020/02/06 06:00 [medline] PHST- 2019/01/19 06:00 [entrez] AID - S0045-2068(18)31089-7 [pii] AID - 10.1016/j.bioorg.2019.01.013 [doi] PST - ppublish SO - Bioorg Chem. 2019 Apr;85:357-363. doi: 10.1016/j.bioorg.2019.01.013. Epub 2019 Jan 10.