Biomimetic synthesis of the central tricyclic portion of ptilomycalin A
摘要:
The central tricyclic portion 20 of ptilomycalin A (1) is formed from bis enone 16 in two steps. Addition of O-methylisourea in DMF to 16 affords a mixture of 17 and 18 that are both converted to a single tricyclic aminal 20a on treatment with NH3 and NH4OAc in methanol at reflux.
Snider; Shi, Journal of the American Chemical Society, 1994, vol. 116, # 2, p. 549 - 557
作者:Snider、Shi
DOI:——
日期:——
Biomimetic synthesis of the central tricyclic portion of ptilomycalin A
作者:Barry B. Snider、Zhongping Shi
DOI:10.1016/s0040-4039(00)60355-6
日期:1993.3
The central tricyclic portion 20 of ptilomycalin A (1) is formed from bis enone 16 in two steps. Addition of O-methylisourea in DMF to 16 affords a mixture of 17 and 18 that are both converted to a single tricyclic aminal 20a on treatment with NH3 and NH4OAc in methanol at reflux.