Reduction of the trioxime derivative of dehydrocholic acid methyl ester wit
h NaBH4-TiCl4 yielded triamine-derivatives of cholic acid. The major produc
t from the reduction was the 3 alpha,7 alpha,12 alpha diastereomer. Stereoc
hemistry of the reduction products was determined via NMR spectroscopy and
X-ray crystallography. (C) 1999 Elsevier Science Ltd. All rights reserved.