An efficient catalytic deprotection of thioacetals employing bismuth triflate: synthesis of pyrrolo[2,1-c] [1,4] benzodiazepines
作者:Ahmed Kamal、P.S.M.M Reddy、D Rajasekhar Reddy
DOI:10.1016/s0040-4039(03)00437-4
日期:2003.3
A simple and efficientdeprotection of thioacetals has been achieved by employing bismuthtriflate. This method has been effectively employed in the preparation of DNA-binding pyrrolo[2,1-c] [1,4]benzodiazepine and its dimers.
通过使用三氟甲磺酸铋已经实现了对硫缩醛的简单有效的脱保护。该方法已有效地用于制备结合DNA的吡咯并[2,1- c ] [1,4]苯并二氮杂及其二聚体。
Facile and efficient synthesis of the dimers of DC-81 antitumour antibiotics
作者:Ahmed Kamal、N. Venugopal Rao
DOI:10.1016/0040-4039(95)00744-w
日期:1995.6
We report an improved, economical and versatile route to the dimers of DC-81 anti-tumour antibiotics. Particularly, the protection and deprotection steps in its synthesis and in the preparation of its precursors have been avoided. There is a significant improvement in the overall yields.