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Citation: Liu Xingping, Liang Xiaotian. STUDY ON STEROSELECTIVE BOROHYDROGENATION OF 3, 5-CYCLO-6-METHOXYL-PREGN-20(22)-ENE[J]. Chinese Journal of Applied Chemistry, ;1989, 6(2): 60-62. shu

STUDY ON STEROSELECTIVE BOROHYDROGENATION OF 3, 5-CYCLO-6-METHOXYL-PREGN-20(22)-ENE

Liu Xingping ¹ ,
Liang Xiaotian ²

1.
1. Institute of Organic Chemistry, Lanzhou University;
2.
2. Institute of Materia Medica, Chinese Academy of Medical Sciences, Beijing

Received Date: 13 May 1988
Available Online: 5 August 1988

The stereoselective borohydrogenation of 3, 5-cyclo-6-methoxyl-pregn-20(22) 5 by dicy-clohexylboronane to 20S-22-ol 1 was investigated.An appropriate ratio of sodium borohydride to boron trifluoride used in this reaction was given, and the structure of 3 unexpected products 6,7,8 obtained in this reaction was determined.
- Stereoselective borohydrogenation,
- Dicyclohexylboronane,
- Sodium borohyd-ride,
- Boron trifluoride,
- Brassinolidee
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