A short and efficient synthesis of renealtins A and B
摘要:
The total syntheses of the first examples of diarylheptanoid natural products, renealtins A (1) and B (2), isolated from Renealmia exaltata are described, utilizing a delta-lactone intermediate 9. The key reactions involved are asymmetric dihydroxylation and oxy-Michael addition. (C) 2007 Elsevier Ltd. All rights reserved.
The present invention provides a compound represented by the following general formula (I):
or a pharmaceutically acceptable salt thereof, a pharmaceutical composition containing such a compound, and the like. The compound or a pharmaceutically acceptable salt thereof, the pharmaceutical composition containing such a compound, or the like is useful as a medicine or the like for therapy of benign prostatic hyperplasia, cancer, osteoporosis, psoriasis, secondary hyperparathyroidism, chronic glomerulonephritis, lupus nephritis and/or diabetic nephropathy and the like.
The present invention provides a compound represented by the following general formula (I):
or a pharmaceutically acceptable salt thereof, a pharmaceutical composition containing such a compound, and the like. The compound or a pharmaceutically acceptable salt thereof, the pharmaceutical composition containing such a compound, or the like is useful as a medicine or the like for therapy of benign prostatic hyperplasia, cancer, osteoporosis, psoriasis, secondary hyperparathyroidism, chronic glomerulonephritis, lupus nephritis and/or diabetic nephropathy and the like.
The present invention provides a compound represented by the following general formula (I):
or a pharmaceutically acceptable salt thereof, a pharmaceutical composition containing such a compound, and the like. The compound or a pharmaceutically acceptable salt thereof, the pharmaceutical composition containing such a compound, or the like is useful as a medicine or the like for therapy of benign prostatic hyperplasia, cancer, osteoporosis, psoriasis, secondary hyperparathyroidism, chronic glomerulonephritis, lupus nephritis and/or diabetic nephropathy and the like.
Metal-free oxidation of aromatic carbon–hydrogen bonds through a reverse-rebound mechanism
作者:Changxia Yuan、Yong Liang、Taylor Hernandez、Adrian Berriochoa、Kendall N. Houk、Dionicio Siegel
DOI:10.1038/nature12284
日期:2013.7.11
functions as a selective oxidant for the transformation of arenes to phenols under mild conditions. Although the reaction proceeds through a radical mechanism, aromatic C–H bonds are selectively oxidized in preference to activated –H bonds. Notably, a wide array of functional groups are compatible with this reaction, and this method is therefore well suited for late-stage transformations of advanced
A short and efficient synthesis of renealtins A and B
作者:Gowravaram Sabitha、K. Yadagiri、J.S. Yadav
DOI:10.1016/j.tetlet.2007.09.025
日期:2007.11
The total syntheses of the first examples of diarylheptanoid natural products, renealtins A (1) and B (2), isolated from Renealmia exaltata are described, utilizing a delta-lactone intermediate 9. The key reactions involved are asymmetric dihydroxylation and oxy-Michael addition. (C) 2007 Elsevier Ltd. All rights reserved.