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Diberal[1]
Names
IUPAC name
5-ethyl-5-(4-methylpentan-2-yl)-1,3-diazinane-2,4,6-trione
Other names
  • DMBB
  • 5-Ethyl-5-(1,3-dimethylbutyl)barbituric acid
  • 5-(1,3-Dimethylbutyl)-5-ethylbarbituric acid
Identifiers
3D model (JSmol)
ChemSpider
UNII
  • InChI=1S/C12H20N2O3/c1-5-12(8(4)6-7(2)3)9(15)13-11(17)14-10(12)16/h7-8H,5-6H2,1-4H3,(H2,13,14,15,16,17)
    Key: KXHLANWWTKSOMW-UHFFFAOYSA-N
  • CCC1(C(=O)NC(=O)NC1=O)C(C)CC(C)C
Properties
C12H20N2O3
Molar mass 240.303 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Diberal, also known as 5-(1,3-Dimethylbutyl)-5-ethylbarbituric acid or DMBB, is an atypical barbiturate. This compound can be either convulsant or anticonvulsant depending on which enantiomer is used.

Pharmacology[edit]

Diberal, unlike most barbiturates, can have convulsant actions. This is uncommon, as barbiturates typically enhance the function of GABA as allorestic modulators and agonists (at higher doses),[2] therefore having anticonvulsant properties. Depending on which isomer is used, it can have either convulsant or anticonvulsant actions.

The different pharmacological profile between isomers is thought to be due to the differences in the formation of hydrogen bonds at the binding sites.[3]

(+)-Isomer[edit]

(+)-DMBB is the atypical enantiomer of diberal. It is atypical in the means that it has convulsant action, unlike most barbiturate drugs.[4]

(−)-Isomer[edit]

Unlike (+)-DMBB, the (−)-isomer is similar to most barbiturates by having anticonvulsant action. It has been found that administration of (−)-DMBB reverses the convulsant actions of (+)-DMBB.[3] (−)-DMBB is slightly more potent than pentobarbital in its depressant properties.[5]

References[edit]

  1. ^ "Diberal".
  2. ^ Suddock, J. T.; Kent, K. J.; Cain, M. D. (2024). "Barbiturate Toxicity". StatPearls. PMID 29763050.
  3. ^ a b "Mechanism of Action of Barbiturates" (PDF).
  4. ^ Desai, Rooma; Savechenkov, Pavel Y.; Zolkowska, Dorota; Ge, Ri Le; Rogawski, Michael A.; Bruzik, Karol S.; Forman, Stuart A.; Raines, Douglas E.; Miller, Keith W. (2015). "Contrasting actions of a convulsant barbiturate and its anticonvulsant enantiomer on the α1β3γ2L GABAA receptor account for their in vivo effects". The Journal of Physiology. 593 (22): 4943–4961. doi:10.1113/JP270971. PMC 4650410. PMID 26378885.
  5. ^ Downes, Hall; Perry, Roger S.; Ostlund, Richard E.; Karler, Ralph (December 1970). "A Study of the Excitatory Effects of Barbiturates". Journal of Pharmacology and Experimental Therapeutics. 175 (3): 692–699. PMID 5489924.
source: https://en.wikipedia.org/w/index.php?title=(-)-5-(1,3-Dimethylbutyl)-5-ethylbarbituric_acid&action=edit&redlink=1

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