| abstract |
The invention provides a Ruogeli key intermediate and a preparation method thereof, belonging to the technical field of chemical synthesis. The intermediate is a compound represented by the formula (A), or a salt or stereoisomer thereof, wherein R is 1 、R 2 Are each independently selected from C 1 ‑C 6 Saturated or unsaturated alkyl groups. The intermediate can be used for synthesizing Ruogeli, and the preparation method is simple to operate, mild in reaction, low in cost and environment-friendly; meanwhile, the product obtained by the preparation method has high purity and yield, and has excellent application prospect. |