Establishment of the absolute configuration of the bioactive marine alkaloid eudistomin X by stereospecific synthesis
✍ Scribed by Rhys Finlayson; Amira Brackovic; Annabel Simon-Levert; Bernard Banaigs; Ronan F. O’Toole; Christopher H. Miller; Brent R. Copp
- Publisher
- Elsevier Science
- Year
- 2011
- Tongue
- French
- Weight
- 399 KB
- Volume
- 52
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
✦ Synopsis
A stereospecific synthesis of both enantiomers of the marine alkaloid eudistomin X using the amino acid chiral pool is achieved. Comparison of 1 H and 13 C NMR chemical shifts of the synthetic product as either the free base, mono-salt or disalt with those reported for the natural product established that the ascidian metabolite was originally characterised as a mono-salt and that the absolute configuration was (10R).
📜 SIMILAR VOLUMES
Enshuol (1), a member of a family of squalene-derived triterpene polyethers named oxasqualenoids, [1] was isolated from the red alga Laurencia omaezakiana Masuda sp. by Suzuki and co-workers in 1995. [2] Although the planar structure and partial configuration of 1 were elucidated by spectroscopic an
Topsentolide A 1 Nine-membered lactone Determination of the absolute configuration Marine oxylipin a b s t r a c t Two possible stereoisomers of topsentolide A 1 , a cytotoxic oxylipin against human solid tumor cell lines, were prepared in order to determine the stereochemistry of natural product. T
Scheme 2. Synthesis of the achiral building block 7; reagents: (a) ICH 2 CO 2 Et, FeSO 4 •7H 2 O, H 2 O 2 , DMSO (72%); (b) (Boc) 2 O, DMAP, MeCN (93%); (c) DIBAL, CH 2 Cl 2 ; (d) (EtO) 2 P(O)CH 2 -CO 2 Et, NaH, THF (63% based on 3); (e) MnO 2 , CHCl 3 Scheme 3. Synthesis of (S)-axinellamine A (1);