A new method for the preparation of alkynes from vinyl triflates
摘要:
Treatment of vinyl triflates with lithium diisopropylamide results in the selective formation of alkynes in moderate to high yields. (C) 1998 Elsevier Science Ltd. All rights reserved.
A new method for the preparation of alkynes from vinyl triflates
作者:Kay M. Brummond、Kirsten Dilzer Gesenberg、Joseph L. Kent、Angela D. Kerekes
DOI:10.1016/s0040-4039(98)01928-5
日期:1998.11
Treatment of vinyl triflates with lithium diisopropylamide results in the selective formation of alkynes in moderate to high yields. (C) 1998 Elsevier Science Ltd. All rights reserved.
Structure-antitumor Activity Relationship of Semi-synthetic Spicamycin Derivatives.
New derivatives of spicamycin modified at the fatty acid moieties of the molecule were synthesized and their structure-activity relationships were examined. The antitumor activity was greatly influenced by modification of the fatty acid moieties to tetradecadienoyl or dodecadienoyl analogues exhibiting better antitumor activity against COL-1 human colon cancer xenograft than SPM VIII.