How is (2beta,3alpha,5alpha,16beta,17beta)-3-Acetoxy-17-hydroxy-16-(1-methyl-1-piperidiniumyl)-2-(1-piperidinyl)androstane bromide (CAS: 50587-95-6) typically synthesized?

This compound is synthesized through a multi-step process involving the functionalization of a steroidal backbone. The synthesis typically begins with the introduction of an acetoxy group followed by the installation of the piperidinium and piperidine substituents. The bromide is then introduced using a suitable brominating agent. The overall process involves the use of organic solvents and reagents, with careful control of reaction conditions to achieve high yield and selectivity.