Quatercyclopropane 31 was oxidized, homologated, reduced, and monocyclopropanated to provide the pentacyclopropane alcohol 35. Subsequent deoxygenation of alcohol 35 was effected using N-(phenylthio)succinimide (24) and tributylphosphine followed by Raney nickel desulfurization and deprotection to produce the alcohol 3. This was oxidized, homologated, and hydrolyzed to provide the fatty acid 2. BOP-Cl-mediated
将四
环丙烷 31 氧化、同系化、还原和单
环丙烷化以提供五
环丙烷醇 35。随后使用 N-(苯
硫基)琥珀
酰亚胺 (24) 和
三丁基膦进行醇 35 的脱氧,然后进行阮内
镍脱
硫和脱保护以产生醇 3。将其氧化、同系化和
水解以提供
脂肪酸 2。BOP-Cl 介导的酸 2 和核苷胺 40 的偶联得到酰胺 1,其在光谱上与真实的 FR-900848 样品 (1) 相同。