Total Synthesis of (+)-Alexine by Utiliz
✍
Martina Dressel; Per Restorp; Peter Somfai
📂
Article
📅
2008
🏛
John Wiley and Sons
🌐
English
⚖ 294 KB
👁 1 views
## Abstract A novel route towards the polyhydroxylated pyrrolizidine alkaloid (+)‐alexine has been developed. A key step in this synthesis is a highly stereoselective [3+2] annulation reaction of __N__‐Ts‐α‐amino aldehyde **7 a** (Ts=tosyl) and 1,3‐bis(silyl)propene **8 a** for the construction of