scholarly journals Toward the total synthesis of maoecrystal V: an intramolecular Diels–Alder route to the maoecrystal V pentacyclic core with the appropriate relative stereochemistry

2011 ◽  
Vol 52 (17) ◽  
pp. 2104-2106 ◽  
Author(s):  
Feng Peng ◽  
Samuel J. Danishefsky
Keyword(s):  
Total Synthesis ◽  
Diels Alder ◽  
Relative Stereochemistry ◽  
Maoecrystal V ◽  
Pentacyclic Core

Catalytic Asymmetric Total Synthesis of (+)- and (−)-Paeoveitol via a Hetero-Diels–Alder Reaction

2017 ◽  
Vol 19 (3) ◽  
pp. 429-431 ◽  
Author(s):  
Tian-Ze Li ◽  
Chang-An Geng ◽  
Xiu-Juan Yin ◽  
Tong-Hua Yang ◽  
Xing-Long Chen ◽  
...  
Keyword(s):  
Total Synthesis ◽  
Alder Reaction ◽  
Diels Alder ◽  
Asymmetric Total Synthesis ◽  
Diels Alder Reaction ◽  
Catalytic Asymmetric

Simple, efficient total synthesis of cantharidin via a high-pressure Diels-Alder reaction

1980 ◽  
Vol 102 (22) ◽  
pp. 6893-6894 ◽  
Author(s):  
William G. Dauben ◽  
Carl R. Kessel ◽  
Kazuo H. Takemura
Keyword(s):  
High Pressure ◽  
Total Synthesis ◽  
Alder Reaction ◽  
Diels Alder ◽  
Diels Alder Reaction

scholarly journals Stereoselective total syntheses of (±)-sinularene and (±)-5-epi-sinularene: a general intramolecular Diels–Alder approach to tricyclic sesquiterpenes

1985 ◽  
Vol 63 (4) ◽  
pp. 993-995 ◽  
Author(s):  
Kazimierz Antczak ◽  
John F. Kingston ◽  
Alex G. Fallis
Keyword(s):  
Double Bond ◽  
Methyl Ester ◽  
Total Synthesis ◽  
Ring System ◽  
Diels Alder ◽  
Exocyclic Double Bond ◽  
Total Syntheses ◽  
Methyl Group ◽  
Secondary Hydroxyl ◽  
Selective Hydrogenolysis

Stereoselective total synthesis of (±)-sinularene and (±)-5-epi-sinularene are described. The sequence employs a "blocked" cyclopentadiene in which the cyclopropane unit also serves as a latent methyl group. Thus intramolecular [4 + 2] cycloaddition of the substituted methyl spiro[2.4]hepta-4,6-dien-1-yl)-2-pentenoate 11 affords 5-benzyloxy-6-isopropyl-8-carbomethoxytetracyclo[5.4.01,7.02,4.02,9]undec-10-ene (12) which after selective hydrogenolysis generates the tricyclo[4.4.01,6.02,8]decane (sinularene) ring system. Removal of the secondary hydroxyl function (Ph3P/CCl4/CH3CN; H2/Pd/C), reduction of the methyl ester (LiAlH4), and introduction of the exocyclic double bond (acetate pyrolysis, 550 °C) completes the synthesis of (±)-sinularene in 14 steps from cyclopentadiene. A parallel series of reactions employing the isopropyl epimer of 12 affords (±)-5-epi-sinularene.

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