reagent (R 2 MgX) or the ketone also reduced the diastereoselectivity of the reaction. When, with regard to chain lengths of the alkyl groups in the Grignard reactions, R 2 > R 1 , the reaction proceeded with SYN selectivity, and vice versa. In general, the C-3 epimers of the target tertiary carbinols could be prepared easily by altering the sequence of the addition of the Grignard reagents (R 1 MgX and
A Simple and Efficient Synthesis of 3′-Azido-3′-deoxythymidine (AZT) Employing a Convergent Route
作者:Bhaskar Dhotare、Angshuman Chattopadhyay
DOI:10.1055/s-2001-15234
日期:——
The syn-homoallyl alcohol 2a has been prepared with absolute stereoselectivity following PDC oxidation of the mixture of diastereomers 2a, 2b and subsequent K-selectride® reduction of the resulting ketone 3. Compound 2a has been efficiently utilized for a simple synthesis of AZT I in a convergent manner.
立体选择性绝对的合成顺式同烯丙醇 2a,是通过对二对映体混合物 2a 和 2b 进行 PDC 氧化,然后对得到的酮 3 进行 K-selectride® 还原制备的。化合物 2a 被高效地用于以收敛方式进行 AZT I 的简单合成。
ROUSH, W. R.;WALTS, A. E., TETRAHEDRON LETT., 1985, 26, N 29, 3427-3430
作者:ROUSH, W. R.、WALTS, A. E.
DOI:——
日期:——
SUGIMURA, HIDEYUKI, NAGUTI KEHNKYUDZE DZIXO,(1988) N 31, S. 55-62