140385-63-3Relevant articles and documents
Total Synthesis of Optically Active Integerrimine, a Twelve-membered Dilactonic Pyrrolizidine Alkaloid of Retronecine Type
Niwa, Haruki,Miyachi, Yasuyoshi,Okamoto, Osamu,Uosaki, Youichi,Kuroda, Akio,et al.
, p. 393 - 412 (2007/10/02)
A total synthesis of the natural enantiomer of integerrimine (1), a twelve-membered dilactonic pyrrolizidine alkaloid of retronecine type has been achieved through the enantioselective synthesis and regioselective coupling of (+)-retronecine (4) and (+)-integerrinecic acid (methylthio)methyl ether (6).
Enantioselective Synthesis of Seven Pyrrolizidine Diols from a Single Precursor
Chamberlin, A. Richard,Chung, John Y. L.
, p. 4425 - 4431 (2007/10/02)
The enantioselective synthesis of seven pyrrolizidine diols has been accomplished from a single, readily available intermediate.The key step of this general scheme involves an acetoxy-directed acyliminium ion-ketene dithioacetal cationic cyclization to gi