A Pd-catalyzed asymmetric alkene 1,2-dioxygenation reaction is described. The diastereoselectivity of the reaction is controlled by tethering a chiral oxime ether directing group to the alkene substrate. The best selectivities are obtained with 8-substituted menthone-derived oxime ether auxiliaries.
KOYAMA, JUNKO;SUGITA, TERUYO;SUZUTA, YUKIO;IRIE, HIROSHI, CHEM. AND PHARM. BULL., 1983, 31, N 8, 2601-2606
Low Calcemic, Highly Antiproliferative, Analogs of Calcitriol
申请人:Posner Gary H.
公开号:US20100137262A1
公开(公告)日:2010-06-03
The disclosure provides compounds, compositions and methods using these compounds and compositions to stimulate the differentiation of cells and inhibit excessive cell proliferation of certain cells, including cancer cells and skin cells, which may be useful in the treatment of diseases characterized by abnormal cell proliferation and/or cell differentiation such as leukemia, myelofibrosis and psoriasis without the well known effect on calcium metabolism, which gives rise to hypercalcemia.