An efficient and practical totalsynthesis of aquayamycin has been accomplished. The highly oxidized and stereochemically complex tetracyclic ring system was constructed using three key reactions: 1) highly diastereoselective 1,2‐addition of C‐glycosyl naphthyllithium to a cyclic ketone, 2) indium‐mediated site‐selective allylation‐rearrangement sequence of naphthoquinone, and 3) diastereoselective
The first total synthesis of aquayamycin (1) has been accomplished. The crucial steps include (1) the Hauser reaction between 3-(phenylsulfonyl)phthalide 3 and cyclohexenone 4 to make up the linear BCD tricycle, and (2) the intramolecular pinacol coupling of keto aldehyde 7 to the full tetracyclic framework.
Synthesis and antitumor activities of aquayamycin and analogues of derhodinosylurdamycin A
作者:Padam P. Acharya、Hem Raj Khatri、Sandip Janda、Jianglong Zhu
DOI:10.1039/c9ob00121b
日期:——
gold-catalyzed glycosylation with S-but-3-ynyl thioglycoside donors was employed for the synthesis of analogues (6 and 7) bearing disaccharide subunits containing α-l-olivoside and α-l-olioside moiety, respectively. Aquayamycin (3), analogues (4-7), and our previously synthesized derhodinosylurdamycin A (2) were then submitted to the Development Therapeutics Program of the National Cancer Institute of National