One-pot preparation of quinolizidin-2-one and indolizidin-7-one ring systems. Concise total synthesis of (±)-myrtine, (±)-lasubine II, and (-)-indolizidine 223AB

Article abstract of DOI:10.1021/jo00108a040

A highly efficient approach to the quinolizidine alkaloids (±)-myrtine (4) and (±)-lasubine II (5) and to the indolizidine alkaloid (-)-indolizidine 223AB (6) is described. The preparation of quinolizidin-2-ones 4/4a and 11b/12b and indolizidin-7-ones 16/