1380328-07-3Relevant academic research and scientific papers
New [apurishiatokishin[apurishiatokishin] derivative containing anticancer agents
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Paragraph 0027-0028, (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.)
Structure-activity studies on the spiroketal moiety of a simplified analogue of debromoaplysiatoxin with antiproliferative activity
Kikumori, Masayuki,Yanagita, Ryo C.,Tokuda, Harukuni,Suzuki, Nobutaka,Nagai, Hiroshi,Suenaga, Kiyotake,Irie, Kazuhiro
experimental part, p. 5614 - 5626 (2012/08/29)
Aplog-1, a simplified analogue of tumor-promoting debromoaplysiatoxin, is antiproliferative but not tumor-promoting. Our recent study has suggested that local hydrophobicity around the spiroketal moiety is a crucial determinant for antiproliferative activity. To further clarify the structural features relevant to the activity, we synthesized two methyl derivatives of aplog-1, where a methyl group was installed at position 4 or 10 of the spiroketal moiety. 10-Methyl-aplog-1 (5) bound to the C1B domains of novel PKCs (δ, η, and θ) with subnanomolar Ki values, approximately 10-20 times stronger than aplog-1, and markedly inhibited the growth of many human cancer cell lines, while 4-methyl-aplog-1 (4) had levels of activity similar to those of aplog-1. Interestingly, 5 showed little tumor-promoting activity unlike the tumor promoter debromoaplysiatoxin. These results suggest that 5 is a potent PKC ligand without tumor-promoting activity and could be a therapeutic lead for the treatment of cancer, like bryostatins.
