Chemical synthesis of 2β-amino-5α-androstane-3α,17β-diol N-derivatives and their antiproliferative effect on HL-60 human leukemia cells
摘要:
Even though few steroids are used for the treatment of leukemia, 2 beta-(4-methylpiperazinyl)-5 alpha-androstane-3 alpha,17 beta-diol (1) was recently reported for its ability to inhibit the proliferation of human leukemia HL-60 cells. With an efficient procedure that we had developed for the aminolysis of hindered steroidal epoxides, we synthesized a series of 2 beta-amino-5 alpha-androstane-3 alpha,17 beta-diol N-derivatives structurally similar to 1. Hence, the opening of 2,3 alpha-epoxy-5 alpha-androstan-17 beta-diol with primary and secondary amines allowed the synthesis of aminosteroids with diverse length, rami. cation, and functionalization of the 2 beta-side chain. Sixty-four steroid derivatives were tested for their capacity to inhibit the proliferation of HL-60 cells; thus obtaining first structure - activity relationship results. Ten aminosteroids with long alkyl chains (7 - 16 carbons) or bulky groups (diphenyl or adamantyl) have shown antiproliferative activity over 78% at 10 mu M and superior to that of the lead compound. The 3,3-diphenylpropylamino, 4-nonylpiperazinyl and octylamino derivatives of 5 alpha-androstane-3 alpha,17 beta-diol inhibited the HL-60 cell growth with IC(50) of 3.1, 4.2 and 6.4 mu M, respectively. They were also found to induce the HL-60 cell differentiation. (c) 2008 Elsevier Ltd. All rights reserved.
Even though few steroids are used for the treatment of leukemia, 2 beta-(4-methylpiperazinyl)-5 alpha-androstane-3 alpha,17 beta-diol (1) was recently reported for its ability to inhibit the proliferation of human leukemia HL-60 cells. With an efficient procedure that we had developed for the aminolysis of hindered steroidal epoxides, we synthesized a series of 2 beta-amino-5 alpha-androstane-3 alpha,17 beta-diol N-derivatives structurally similar to 1. Hence, the opening of 2,3 alpha-epoxy-5 alpha-androstan-17 beta-diol with primary and secondary amines allowed the synthesis of aminosteroids with diverse length, rami. cation, and functionalization of the 2 beta-side chain. Sixty-four steroid derivatives were tested for their capacity to inhibit the proliferation of HL-60 cells; thus obtaining first structure - activity relationship results. Ten aminosteroids with long alkyl chains (7 - 16 carbons) or bulky groups (diphenyl or adamantyl) have shown antiproliferative activity over 78% at 10 mu M and superior to that of the lead compound. The 3,3-diphenylpropylamino, 4-nonylpiperazinyl and octylamino derivatives of 5 alpha-androstane-3 alpha,17 beta-diol inhibited the HL-60 cell growth with IC(50) of 3.1, 4.2 and 6.4 mu M, respectively. They were also found to induce the HL-60 cell differentiation. (c) 2008 Elsevier Ltd. All rights reserved.
Amino-steroids. Part III. 2- and 3-Amino-5α-androstanes
作者:C. L. Hewett、D. S. Savage
DOI:10.1039/j39680001134
日期:——
Condensation of 2α,3α- and 2β,3β-epoxy-5α-androstanes with secondary cyclic amines gives 2β-amino-3α-ols and 3α-amino-2β-ols respectively; reaction of a 2β-bromo-3α-hydroxy-5α-androstane with the same cyclic amines gives the 2α,3α-epoxide in contrast to the 3α-bromo-2β-hydroxy-isomer, which undergoes substitution without inversion to give the corresponding 3α-amino-2β-ol. The mechanisms of these reactions