90610-49-4Relevant articles and documents
The exocyclic olefin geometry control via Ireland-Claisen rearrangement: Stereoselective total syntheses of Barmumycin and Limazepine e
Smits, Gints,Zemribo, Ronalds
, p. 4406 - 4409 (2013)
Stereoselective total syntheses of Limazepine E and Barmumycin, potent, naturally occurring antitumor agents, are described. The total syntheses control the olefin geometry via a highly selective chelation-controlled Ireland-Claisen rearrangement of a seven-membered lactone-derived boron enolate for the synthesis of (E)-4-ethylidene proline, a crucial building block for a number of natural products.
Limazepines A-F, pyrrolo[1,4]benzodiazepine antibiotics from an Indonesian Micrococcus sp.
Fotso, Serge,Zabriskie, T. Mark,Proteau, Philip J.,Flatt, Patricia M.,Santosa, Dwi Andreas,Sulastri,Mahmud, Taifo
body text, p. 690 - 695 (2009/12/24)
In our screening of Indonesian microorganisms for novel bioactive natural products we have isolated seven new compounds, designated as limazepines A, B1 and B2 (isolated as an isomeric mixture), C, D, E, and F, from the culture broth of Micrococcus sp. st