Rh(II)‐Catalyzed Denitrogenative Reaction of 1,2,3‐Triazolyl Esters with Indoles or Arenes: Efficient Synthesis of Homotryptamines or Allylamines
作者:Kuntal Pal、Geetanjali S. Sontakke、Chandra M. R. Volla
DOI:10.1002/adsc.202000632
日期:2020.9.8
efficient strategy for the synthesis of structurally diverse homotryptamines and allyl amines via a Rh(II)‐catalyzed tandem reaction of 1,2,3‐triazolyl esters with either indoles or 1,3,5‐trimethoxybenzene has been developed. The reaction proceeds via Rh(II)‐catalyzed intramolecular rearrangement of triazoles into 1‐azadienes followed by regioselective nucleophilic addition. The efficiency of the current
Arresting cancer: The well‐known tubulin‐binding agent colchicine was diversified through a click conjugation approach. The key azide, readily prepared from desacetylcolchicine by diazo transfer, was efficiently converted to various triazoles. Biological evaluation of these triazoles revealed their potential as antitumor agents for further development.
Bioorganometallic Chemistry – Synthesis and Antitumor Activity of Cobalt Carbonyl Complexes
作者:Manfred Jung、David E. Kerr、Peter D. Senter
DOI:10.1002/ardp.19973300604
日期:——
generally called bioorganometallic chemistry, is receiving increasing interest. We present the first part of our studies concerning the biological activity of organometallic compounds. Several alkyne‐cobaltcarbonyl complexes inhibited the growth of human melanoma and lung carcinoma cell lines. They are more active than uncomplexed dicobalt octacarbonyl, cobalt chloride, or the free ligand. A significant