Pd-allylic substitution mediated synthesis of 25-amino vitamin D3 derivatives
摘要:
Vitamin D-3 analogues with a nitrogen atom linked to C-25 have been synthesized. The key step involves an allylic substitution with 2-nitropropane using catalytic species of Pd(O). This optimized procedure gave the desired compound with complete regioselectivity and high yields and was used for the successful preparation of targeted vitamin D derivatives. The chosen strategy for the construction of the triene unit was totally compatible with the new functional groups. (C) 2013 Elsevier Ltd. All rights reserved.
Pd-allylic substitution mediated synthesis of 25-amino vitamin D3 derivatives
摘要:
Vitamin D-3 analogues with a nitrogen atom linked to C-25 have been synthesized. The key step involves an allylic substitution with 2-nitropropane using catalytic species of Pd(O). This optimized procedure gave the desired compound with complete regioselectivity and high yields and was used for the successful preparation of targeted vitamin D derivatives. The chosen strategy for the construction of the triene unit was totally compatible with the new functional groups. (C) 2013 Elsevier Ltd. All rights reserved.