title: A concise approach to the spiroiminal fragment of marineosins.
abstract: A concise approach to the spiroiminal fragment of marineosins A and B is described. The key steps involve an acid-catalyzed N-acyliminium ion cyclization and a Vilsmeier-Haack type reaction with Tf2O.
authors.affiliation: Beijing National Laboratory of Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
authors.forename: Guang
authors.initials: G
authors.lastname: Li
authors.forename: Xun
authors.initials: X
authors.lastname: Zhang
authors.forename: Qi
authors.initials: Q
authors.lastname: Li
authors.forename: Pengju
authors.initials: P
authors.lastname: Feng
authors.forename: Yian
authors.initials: Y
authors.lastname: Shi
mesh_terms: D000143:Acids / Q000737:chemistry; D002384:Catalysis; D018360:Crystallography, X-Ray; D003500:Cyclization; D005663:Furans / Q000737:chemistry*; D007769:Lactams / Q000737:chemistry; D008958:Models, Molecular; D011758:Pyrroles / Q000737:chemistry*; D013141:Spiro Compounds / Q000737:chemistry*
chemical_list: D000143:Acids; D005663:Furans; D007769:Lactams; D011758:Pyrroles; D013141:Spiro Compounds; C543079:marineosin A; C543080:marineosin B; C520774:spiroketal