Total synthesis of (±)-5-iminodaunomycinone and (±)-4-demethoxy-5-iminodaunomycinone
摘要:
The total synthesis of (+/-)-5-iminodaunomycinone (4a) and (+/-)-4-demethoxy-5-iminodaunomycinone (4b) has been achieved from the readily available 5-methoxy-1,4-dihydroxy-9,10-anthraquinone (5a) and 1,4-dihydroxy-9,10-anthraquinone (5b), respectively. A short and convenient synthesis of (+/-)-daunomycinone (4c) has also been achieved by acid hydrolysis of 4a.
Total synthesis of (±)-5-iminodaunomycinone and (±)-4-demethoxy-5-iminodaunomycinone
摘要:
The total synthesis of (+/-)-5-iminodaunomycinone (4a) and (+/-)-4-demethoxy-5-iminodaunomycinone (4b) has been achieved from the readily available 5-methoxy-1,4-dihydroxy-9,10-anthraquinone (5a) and 1,4-dihydroxy-9,10-anthraquinone (5b), respectively. A short and convenient synthesis of (+/-)-daunomycinone (4c) has also been achieved by acid hydrolysis of 4a.
Total synthesis of (±)-5-iminodaunomycinone and (±)-4-demethoxy-5-iminodaunomycinone
作者:Francisco Fariña、Pedro Noheda、M.Carmen Paredes
DOI:10.1016/s0040-4039(00)74501-1
日期:1991.2
The total synthesis of (+/-)-5-iminodaunomycinone (4a) and (+/-)-4-demethoxy-5-iminodaunomycinone (4b) has been achieved from the readily available 5-methoxy-1,4-dihydroxy-9,10-anthraquinone (5a) and 1,4-dihydroxy-9,10-anthraquinone (5b), respectively. A short and convenient synthesis of (+/-)-daunomycinone (4c) has also been achieved by acid hydrolysis of 4a.
Polycyclic hydroxy quinones. 28. Synthesis and Diels-Alder reactions of N,N,O-triacyl derivatives of 10-amino-9-hydroxy-1,4-anthraquinones. An efficient, regiospecific synthesis of (.+-.)-5-iminodaunomycinone, (.+-.)-4-demethoxy-5-iminodaunomycinone, and (.+-.)-daunomycinone
作者:Francisco Farina、Pedro Noheda、M. Carmen Paredes
DOI:10.1021/jo00078a019
日期:1993.12
The development of a general strategy for the construction of anthracyclinones based on a Diels-Alder reaction of substituted derivatives of 10-amino-9-hydroxy-1,4-anthraquinone is described. The key stages are (i) formation of N,O,O-triacyl derivatives of 1,4-dihydroxy-9,10-anthraquinone monoimines in a tautomer specific fashion, (ii) transacylation into N,N,O-triacyl derivatives of the corresponding 10-amino-9-hydroxy-1,4-anthraquinone, and (iii) Diels-Alder reaction with an appropriately substituted 1,3-diene regiocontrolled by steric factors. This strategy has been applied to the total synthesis of (+/-)-5-iminodaunomycinone (4) and (+/-)-4-demethoxy-5-iminodaunomycinone (3) and to a novel and short synthesis of (+/-)-daunomycinone (5).