Journal
JOURNAL OF ORGANIC CHEMISTRY
Volume 87, Issue 24, Pages 16913-16917Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.joc.2c0227816913J
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Funding
- AMED [JP21am0101084, JP22ama121054]
- Tokyo Biochemical Research Foundation
- Takeda Science Foundation
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The first total synthesis of marine sesterterpenoid ansellone G (2) has been accomplished. The hydrobenzopyran skeleton of ansellone G (2) was synthesized through the Prins cyclization reaction of a chloro-substituted homoallyl alcohol. The HIV latency-reversing activity of the synthesized compounds was also evaluated.
The first total synthesis of marine sesterterpenoid ansellone G (2) was accomplished. This strategy utilizes the Prins cyclization reaction of a chloro-substituted homoallyl alcohol to synthesize the hydrobenzopyran skeleton. The preintroduction of the chloro groups facilitated the functional group transformation for 2 after constructing the carbon framework. Furthermore, we also successfully synthesized phorbadione (3) by dehydrating the tertiary alcohol. The HIV latency-reversing activity of the synthesized 2, 3, and deacetylated 2 was also evaluated. O OH HO,. * O CI Prins cyclization reaction with chloro-substituted homoallyl alcohol Prins cyclization H phorbadione (3) OAc 7.2% in 11 steps (LLS) OAc ansellone G (2) 13% in 10 steps (LLS)
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