How is 1-(2,3,5,6,8,9,11,12-Octahydro-1,4,7,10,13-benzopentaoxacyclopentadecin-15-yl)ethanone (CAS: 41757-95-3) typically synthesized?

1-(2,3,5,6,8,9,11,12-Octahydro-1,4,7,10,13-benzopentaoxacyclopentadecin-15-yl)ethanone is typically synthesized via a multistep process involving the condensation of an aldehyde with a benzene ring-substituted cyclopentadecanone, followed by a reduction step to form the desired alcohol, which is then oxidized to the ketone. The synthesis often uses catalytic hydrogenation and oxidative conditions to achieve high yield and selectivity.