1446754-13-7Relevant academic research and scientific papers
Effects of the methoxy group in the side chain of debromoaplysiatoxin on its tumor-promoting and anti-proliferative activities
Yanagita, Ryo C.,Kamachi, Hiroaki,Kikumori, Masayuki,Tokuda, Harukuni,Suzuki, Nobutaka,Suenaga, Kiyotake,Nagai, Hiroshi,Irie, Kazuhiro
, p. 4319 - 4323 (2013)
Debromoaplysiatoxin (DAT) is a tumor promoter isolated from sea hare and exhibits anti-proliferative activity against several cancer cell lines. To clarify key residues that are responsible for its tumor-promoting activity, we focused on the chiral methoxy group in the side chain, whose role had not yet been discussed or examined before. Demethoxy-DAT (8) was derived from DAT and we evaluated its tumor-promoting activity, anti-proliferative activity, and ability to bind to protein kinase C (PKC) isozymes. Compound 8 showed somewhat weaker tumor-promoting activity than that of DAT both in vitro and in vivo, but showed higher anti-proliferative activity against several cancer cell lines. Although the affinity to novel PKC isozymes of 8 was comparable to that of DAT, the affinity to conventional PKC isozymes decreased slightly. These results suggest that the methoxy group of DAT is one of the key residues critical for tumor-promoting activity but not for anti-proliferative activity. Since the methoxy group has little influence on the molecular hydrophobicity, this is the first report showing that structural factors other than hydrophobicity in the side chain of DAT affected its biological activities.
New [apurishiatokishin[apurishiatokishin] derivative containing anticancer agents
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Paragraph 0033-0034, (2017/09/08)
The invention provides an aplysiatoxin derivative represented by formula (I), or a pharmaceutically acceptable salt thereof, that is a PKC activator having no carcinogenesis-promoting activity that can serve as an alternative to Bryo-1 as a novel compound that can be used as an anticancer agent. (In formula (I), R1 is a hydrogen atom or hydroxyl group; R2 is a hydrogen atom or methyl group; R3 is a hydrogen atom or methyl group; R4 is a hydrogen atom or methyl group; R5 is a hydrogen atom or methyl group; and R6 is represented by a substituent selected from any of a hydrogen atom, halogen atom, acetylamino group, hydroxyl group, or optionally substituted alkyl group having 1-5 carbon atoms.)
