Abstract
The 20,20-dimethylacetal group proposed for protection of the 20-oxo group in 21-hydroxylation of steroids by hypervalent iodine compounds has been successfully used to hamper side reactions in microbial 9α- and 11β-hydroxylation and 4-dehydrogenation of 21-hydroxy-16α,17α-epoxypregnanes by Rhodococcus sp., Curvularia lunata and Corynebacterium mediolanum cultures.
References
1.
10.1070/MC1991v001n03ABEH000069_bib1
Akhrem
Steroidy i mikroorganizmy,
1970
2.
Moriarty R.M., John L.S., Du P.C.
Journal of the Chemical Society Chemical Communications,
1981
3.
Moriarty R.M., Hu H., Gupta S.C.
Tetrahedron Letters,
1981
4.
Kamernitzky A.V., Turuta A.M., Fadeeva T.M., Istomina Z.I.
Synthesis,
1985
5.
10.1070/MC1991v001n03ABEH000069_bib5
Kamernitzky
Izv. Akad. Nauk SSSR, Ser. Khim.,
1986
6.
10.1070/MC1991v001n03ABEH000069_bib6
Turuta
Izv. Akad. Nauk SSSR, Ser. Khim.,
1988
7.
10.1070/MC1991v001n03ABEH000069_bib7
Turuta
Izv. Akad. Nauk SSSR, Ser. Khim.,
1991
8.
Datcheva V.K., Voishvillo N.E., Kamernitskii A.V., Vlahov R.J., Reshetova I.G.
Steroids,
1989
9.
Datcheva V., Kamernitskii A., Vlahov R., Voishvillo N., Levi V., Reshetova I., Chernoburova E.
Applied Microbiology and Biotechnology,
1986
10.
E.J. Agnello, B.M. Bloom, G.D. Laubach, U. S. Pat., 2 835 274(1958).
11.
E.J. Agnello, B.M. Bloom, G.D. Laubach, U. S. Pat., 2 976 283(1961).
12.
Mahato S.B., Banerjee S.
Phytochemistry,
1985
13.
10.1070/MC1991v001n03ABEH000069_bib13
Mahato
Phytochemistry,
1989
14.
10.1070/MC1991v001n03ABEH000069_bib14
Ercoli
Gazz. Chim. Ital.,
1959