1981
DOI: 10.1002/ardp.19813141205
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Dimere Cannabinoide mit Ethanbrücke

Abstract: Durch Pechmann-Duisberg Reaktion der Tetrahydroxy-diphenylethane 3 und 17a mit p-Ketocarbonsaureestern entstehen die dimeren, ethanverbriickten Cumarin-Derivate Sa, 10n, Un, 14a, 1& und 1%, die sich durch Grignard-Reaktion zu den dimeren Cannabinoiden 8, lod, l2b, 14c, 18d und 19d umsetzen lassen. Dimeric CDnnabaoids with an Ethane Bridge"The dimeric ethane-bridged coumarin derivatives Sa, lOP, l2a, 1411, 1& and 1% result from a Pechmunn-Duisberg reaction of the tetrahydroxy(dipheny1)ethanes 3 and 17s with p-k… Show more

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Cited by 7 publications
(4 citation statements)
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“…( E )‐3,3′,5,5′‐Tetramethoxystilbene (12a): 18 3,5‐Dimethoxybenzaldehyde ( 11 )19 (1.0 g, 6.0 mmol) and 7c (1.7 g, 6.0 mmol), dissolved in 50 mL of dry DMF, were added dropwise to a solution of potassium tert ‐butoxide (1.7 g, 15.2 mmol) in 50 mL of dry DMF. The mixture was stirred at room temperature for 1 h and then poured onto 100 g of crushed ice.…”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…( E )‐3,3′,5,5′‐Tetramethoxystilbene (12a): 18 3,5‐Dimethoxybenzaldehyde ( 11 )19 (1.0 g, 6.0 mmol) and 7c (1.7 g, 6.0 mmol), dissolved in 50 mL of dry DMF, were added dropwise to a solution of potassium tert ‐butoxide (1.7 g, 15.2 mmol) in 50 mL of dry DMF. The mixture was stirred at room temperature for 1 h and then poured onto 100 g of crushed ice.…”
Section: Methodsmentioning
confidence: 99%
“…126−128 °C (ref. : 126−128 °C) 18. − 1 H NMR (CDCl 3 ): δ = 3.81 (s, 12 H, OCH 3 ), 6.39 (t, 2 H, aromat.…”
Section: Methodsmentioning
confidence: 99%
“…: 126Ϫ128°C). [18] (E)-3,3Ј5,5Ј-Tetrahydroxystilbene (12b): [20] Compound 12a (1.0 g, 3.3 mmol) was dissolved in 100 mL of dry dichloromethane and treated dropwise with boron tribromide (22 mL, 22.0 mmol, 1.0  in n-hexane). The reaction mixture was heated under reflux for 7 h and carefully quenched with water.…”
Section: Preparation Of the Stilbenoid Scaffoldsmentioning
confidence: 99%
“…Synthesis of the Semisquaric Acid 21: 3,4-Dichloro-3-cyclobutene-1,2-dione (squaric acid dichloride) (18) was prepared according to the literature. [1b]…”
Section: -[(E)-2-{4-[(e)-2-(35-dimethoxyphenyl)ethenyl]phenyl}ethenmentioning
confidence: 99%