The present invention relates to a method of treating cancer selected from the group of cancers consisting of prostate cancer, renal cancer, breast cancer, ovarian cancer, CNS cancer, melanoma, lung cancer, and bladder cancer. This method involves administering to a patient in need of such treatment a therapeutically effective amount of a betulinol derivative compound of Formula (I). Also disclosed are conjugated and immunoconjugated derivatives of the compound of Formula (I) as well as methods of making and using them.
Zirconium-Catalyzed Hydroalumination of C═O Bonds: Site-Selective De-<i>O</i>-acetylation of Peracetylated Compounds and Mechanistic Insights
作者:Thibaut Courant、Marine Gavel、Romain M. Q. Renard、Vincent Gandon、Antoine Y. P. Joosten、Thomas Lecourt
DOI:10.1021/acs.joc.1c00060
日期:2021.7.16
An unprecedented hydroalumination of C ═ O bondscatalyzed by zirconocenedichloride is reported herein and applied to the site-selective deprotection of peracetylated functional substrates. A mixed metal hydride, with 1:1 zirconium/aluminum stoichiometry, is also shown to be the reductive species. A catalytic cycle is finally proposed for this transformation with no precedent in the field of zirconium
本文报道了一种前所未有的由二氯化锆催化的 C = O 键的氢铝化,并应用于全乙酰化功能底物的位点选择性脱保护。具有 1:1 锆/铝化学计量比的混合金属氢化物也显示为还原物质。最终为这种转化提出了一种催化循环,这在锆催化领域是没有先例的。