Shoji A, Arai Y, Asakawa R, Saito T, Kuramochi K, Yajima A. Synthesis and structure-activity relationship of violaceoid D, a cytotoxic alkylated phenol isolated from Aspergillus violaceofuscus Gasperini.
Biosci Biotechnol Biochem 2023;
87:363-370. [PMID:
36592963 DOI:
10.1093/bbb/zbac212]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 12/23/2022] [Indexed: 01/04/2023]
Abstract
The enantioselective synthesis of violaceoid D, a cytotoxic phenolic compound isolated from the culture broth of Aspergillus violaceofuscus Gasperini, was achieved. The total synthesis involves stereoselective construction of the stereogenic center of violaceoid D via Sharpless asymmetric dihydroxylation, followed by Smiles rearrangement. The absolute configuration of natural violaceoid D was determined to be R from the specific rotation value. Synthesized violaceoid D and its analogs were evaluated for cytotoxicity against two human cancer cell lines, Jurkat and HCT116. Because the enantiomer of violaceoid D showed no cytotoxicity, it is plausible that violaceoid D binds selectively to specific target molecules, such as proteins in the cancer cells.
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