Synthesis and biological evaluation of 20-hydroxytriptonide and its analogues
摘要:
20-Hydroxytriptonide was synthesized from readily accessible L-abietic acid in 22 linear steps, which features a Barton reaction carried out under air atmosphere to install the C20-hydroxy group. Meanwhile, we also synthesized (5R)-5-hydroxytriptolide's probable metabolite product. Preliminary structure activity relationship studies revealed that C20-angular methyl group might play a key role in maintaining the electronic properties of the whole molecule, which was essential for retaining the cytotoxic activity and might easily and inevitably be affected by the introduction of a new group. (C) 2014 Elsevier Ltd. All rights reserved.
Synthesis and biological evaluation of 20-hydroxytriptonide and its analogues
摘要:
20-Hydroxytriptonide was synthesized from readily accessible L-abietic acid in 22 linear steps, which features a Barton reaction carried out under air atmosphere to install the C20-hydroxy group. Meanwhile, we also synthesized (5R)-5-hydroxytriptolide's probable metabolite product. Preliminary structure activity relationship studies revealed that C20-angular methyl group might play a key role in maintaining the electronic properties of the whole molecule, which was essential for retaining the cytotoxic activity and might easily and inevitably be affected by the introduction of a new group. (C) 2014 Elsevier Ltd. All rights reserved.