ChemInform Abstract: AN EXCELLENT REAGENT FOR THE REMOVAL OF THE TERT‐BUTYLDIMETHYLSILYL PROTECTING GROUP

Newton, Roger F.; Reynolds, Derek P.; Finch, Mark A. W.; Kelly, David R.; Roberts, Stan M

doi:10.1002/chin.198004117

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“…The SAH group of the n ) 1 series was introduced by means of an allylic oxidation 14 of 22. Removal of all silyl protecting groups from 23 by treatment with HF in acetonitrile 15 produced tetrol 24 in only modest yield. This compound was particularly sensitive to acid; therefore the protecting groups were removed in two steps.…”

Section: Chemistrymentioning

confidence: 99%

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Classical/Nonclassical Hybrid Cannabinoids: Southern Aliphatic Chain-Functionalized C-6β Methyl, Ethyl, and Propyl Analogues

et al. 1998

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The stereoelectronic requirements for interaction of the southern aliphatic hydroxyl of cannabimimetic pharmacophores with the CB1 and CB2 receptors are explored. The stereoselective syntheses of three series of classical/nonclassical hybrid cannabinoids are described. These compounds were designed to investigate the importance of the southern aliphatic hydroxyl (SAH) pharmacophore for cannabimimetic activity. Variation in the chain length of the SAH moiety in these 6beta-(hydroxyalkyl)dihydrobenzopyran analogues, from 6beta-hydroxymethyl to 6beta-(omega-hydroxyethyl) and 6beta-(omega-hydroxypropyl), and the effects of replacing the hydroxyl functionality by hydride and iodide are reported. Our results indicate that the SAH pharmacophore has less pronounced effects than the C-3 aliphatic chain on cannabinoid activity. Furthermore, it appears that this southern molecular component is capable of interacting with two different subsites on the receptor and that the nature of this interaction is determined by the terminal substituent on the C-6beta alkyl group. One of the subsites can accommodate the relatively polar SAH pharmacophore, while the second subsite interacts with more hydrophobic C-6beta substituents and can accommodate large spherical pharmacophores separated by three methylene carbons from the tricyclic cannabinoid template.

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Section: Chemistrymentioning

confidence: 99%

“…, 178 (54), 149 (22), 109(15), 83 (75). Exact mass calculated for C24H36O3, 372.2655; found, 372.2648.…”

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confidence: 99%

Classical/Nonclassical Hybrid Cannabinoids: Southern Aliphatic Chain-Functionalized C-6β Methyl, Ethyl, and Propyl Analogues

et al. 1998

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ChemInform Abstract: AN EXCELLENT REAGENT FOR THE REMOVAL OF THE TERT‐BUTYLDIMETHYLSILYL PROTECTING GROUP

Abstract: 30% einer 40%igen wäßrigen Flußsäure in Acetonitril) verwendet.

Cited by 1 publication

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Classical/Nonclassical Hybrid Cannabinoids: Southern Aliphatic Chain-Functionalized C-6β Methyl, Ethyl, and Propyl Analogues

Classical/Nonclassical Hybrid Cannabinoids: Southern Aliphatic Chain-Functionalized C-6β Methyl, Ethyl, and Propyl Analogues

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