The first enantioselective synthesis of (−)-microcionin 2
摘要:
An approach known to give regiospecific and stereospecific reactions has been applied to the enantioselective synthesis of the natural (-)-microcionin 2 (1), a prototype of trans relationship of the methyl groups on the furanosesquiterpenes. Copyright (C) 1996 Elsevier Science Ltd
The first enantioselective synthesis of (−)-microcionin 2
摘要:
An approach known to give regiospecific and stereospecific reactions has been applied to the enantioselective synthesis of the natural (-)-microcionin 2 (1), a prototype of trans relationship of the methyl groups on the furanosesquiterpenes. Copyright (C) 1996 Elsevier Science Ltd
Studies on the Diels–Alder reaction of annulated furans: application to the synthesis of substituted phenanthrenes
作者:Jeffrey B. Sperry、Jasmine R. Constanzo、Jerry Jasinski、Ray J. Butcher、Dennis L. Wright
DOI:10.1016/j.tetlet.2005.02.148
日期:2005.4
attempt to utilize the synthetic power of the furan nucleus in the synthesis of complex natural products, we have developed an entry into annulated furan intermediates that involves an electrochemical annulation protocol. An approach to the eunicellin diterpenes based on this methodology required the use of an intermolecular Diels–Alderreaction on an annulated furan. Although well known for simple furans
作者:Heping Deng、Wei Cao、Rong Liu、Yanhui Zhang、Bo Liu
DOI:10.1002/anie.201700958
日期:2017.5.15
Asymmetrictotalsynthesis of the dimeric diterpenoid hispidanin A was accomplished by non‐catalytic Diels–Alder cycloaddition at room temperature. The synthesis relies on iron‐catalyzed coupling to construct a Z‐configured trisubstituted alkene, an iron‐catalyzed radical cascade to generate a labdane‐type diene, and both Yamamoto cationic polyene cyclization and palladium‐catalyzed Stille coupling
Asymmetric Synthesis of Hispidanin A and Related Diterpenoids
作者:Wei Cao、Heping Deng、Ying Sun、Bo Liu、Song Qin
DOI:10.1002/chem.201801156
日期:2018.6.26
second generation of synthesis, key elements included an iron‐catalyzed radical cascade to access the labdane‐type diene on the basis of hydrogen atom transfer, and an enantioselective cationic polyene cyclization furnished the totarane‐type dienophile. Reaction optimization and mechanistic analysis of the radical cascade reaction was conducted. Furthermore, the [4+2] cycloaddition reaction was achieved