## Abstract Conversion of 2‐bromomethylstyrene **22** and benzocyclobutenyl carbamate **28** to the benzophenanthridine alkaloids (±)‐chelidonine (**1**, five steps, 25% from **28**) and to (±)‐norchelidonine (**2**, six steps, 24% from **28**) are described. The key step **29 → 31** involves a hig
The asymmetric total synthesis of estradiol by an intramolecular cycloaddition reaction of o-quinodimethane
✍ Scribed by Tetsuji Kametani; Hiroo Matsumoto; Hideo Nemoto; Keiichiro Fukumoto
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- French
- Weight
- 286 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0040-4039
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