The elucidation of the structures of the cochliobolins A J, and B 2 has recently been reported 1,2 . Inspection suggests that these substances are constructed from five isoprene units linked together head to tail, as shown in 2 for cochliobolin A.
On the biosynthesis and the structure of lipoxin B
โ Scribed by Brian J. Fitzsimmons; Joshua Rokach
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- French
- Weight
- 207 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0040-4039
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โฆ Synopsis
Data are presented which shows that the llpoxlns are formed via a tetraene epoxlde. supportlng the asslgnment of the all trans tetraene geometry to llpoxin B.
๐ SIMILAR VOLUMES
Further to a previous paper1 commenting on the structures of GB1, GBIA and GS2, extractives from Cercinia buchananii2, two publications have appeared 3,4 and amplification of earlier remarks is in order.
Ccbyrinic acid (21, the precursor 1 of vitamin B12, is biosynthesised 2-5 fran uro'gsn-III (l)bymanYS~. DiscoveryoftheirnatUral~~requiresthetrappingforstrudural study of in tern&iatss (as such or mcdifisd) bstwsn ( ) and ( ). Such sk&ances, the partly purified borriphyrins, wers first &taint& in 197