Synthetic studies relevant to biosynthetic research on vitamin B12. Part 10. Construction of the east and west building blocks for synthesis of isobacteriochlorins
作者:Alan R. Battersby、Michael H. Block、Christopher J. R. Fookes、Peter J. Harrison、Graeme B. Henderson、Finian J. Leeper
DOI:10.1039/p19920002175
日期:——
Studies with model compounds have led to the development of effective methods for (a) linking the pyrrolic rings to the reduced rings present in the isobacteriochlorin system (e.g.4) and (b) for introducing the carbon at C-5 required to complete the macrocycle. In the course of this work, many new pyrrolic systems have been prepared and characterised.
Synthesis relevant to vitamin B<sub>12</sub>biosynthesis: synthesis of (±)Faktor-I octamethyl ester
作者:Simon P. D. Turner、Michael H. Block、Zhi-Chu Sheng、Steven C. Zimmerman、Alan R. Battersby
DOI:10.1039/c39850000583
日期:——
Faktor-I, the chlorin which arises by aromatisation of the mono-C-methylated intermediate on the biosynthetic pathway to vitamin B12, has been synthesized in racemic form as its octamethylester by ring-closing the macrocycle photochemically.