Salvinorin B methoxymethyl ether

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Salvinorin B methoxymethyl ether
Salvinorin B methoxymethyl ether.svg
Clinical data
ATC code
  • none
Legal status
Legal status
  • Legal/Uncontrolled
PubChem CID
Chemical and physical data
Formula C23H30O8
Molar mass 434.49 g·mol−1
3D model (JSmol)

Salvinorin B methoxymethyl ether (2-O-methoxymethylsalvinorin B, 2-EMSB, or 2-MMSB) is a semi-synthetic analogue of the natural product salvinorin A which is used in scientific research.[1][2] It has a longer duration of action of around 2–3 hours, compared to less than 30 minutes for salvinorin A,[3] and has increased affinity and potency at the κ-opioid receptor. Like the related compound herkinorin, salvinorin B methoxymethyl ether is made from salvinorin B, which is most conveniently made from salvinorin A by deacetylation,[4] as while both salvinorin A and salvinorin B are found in the plant Salvia divinorum, salvinorin A is present in larger quantities.[5]

Salvinorin B methoxymethyl ether has a Ki of 0.60 nM at the κ opioid receptor,[6] and is around five times more potent than salvinorin A in animal studies, although it is still only half as potent as its stronger homolog salvinorin B ethoxymethyl ether.[7]

See also[edit]


  1. ^ Inan S; Lee DY; Liu-Chen LY; Cowan A (March 2009). "Comparison of the diuretic effects of chemically diverse kappa opioid agonists in rats: nalfurafine, U50,488H, and salvinorin A". Naunyn-Schmiedeberg's Archives of Pharmacology. 379 (3): 263–70. doi:10.1007/s00210-008-0358-8. PMID 18925386. 
  2. ^ McLennan GP; Kiss A; Miyatake M; Belcheva MM; Chambers KT; Pozek JJ; Mohabbat Y; Moyer RA; Bohn LM; Coscia CJ (December 2008). "Kappa opioids promote the proliferation of astrocytes via Gβγ and β-arrestin 2-dependent MAPK-mediated pathways". Journal of Neurochemistry. 107 (6): 1753–65. doi:10.1111/j.1471-4159.2008.05745.x. PMC 2606093Freely accessible. PMID 19014370. 
  3. ^ Wang Y; Chen Y; Xu W; Lee DY; Ma Z; Rawls SM; Cowan A; Liu-Chen LY (March 2008). "2-Methoxymethyl-Salvinorin B Is a Potent κ Opioid Receptor Agonist with Longer Lasting Action in Vivo Than Salvinorin A". The Journal of Pharmacology and Experimental Therapeutics. 324 (3): 1073–83. doi:10.1124/jpet.107.132142. PMC 2519046Freely accessible. PMID 18089845. 
  4. ^ Lee DY; Karnati VV; He M; Liu-Chen LY; Kondaveti L; Ma Z; Wang Y; Chen Y; Beguin C; Carlezon WA; Cohen B (August 2005). "Synthesis and in vitro pharmacological studies of new C(2) modified salvinorin A analogues". Bioorganic & Medicinal Chemistry Letters. 15 (16): 3744–7. doi:10.1016/j.bmcl.2005.05.048. PMID 15993589. 
  5. ^ Medana C; Massolino C; Pazzi M; Baiocchi C (January 2006). "Determination of salvinorins and divinatorins in Salvia divinorum leaves by liquid chromatography/multistage mass spectrometry". Rapid Communications in Mass Spectrometry. 20 (2): 131–6. doi:10.1002/rcm.2288. PMID 16331747. 
  6. ^ Munro TA; Duncan KK; Xu W; Wang Y; Liu-Chen LY; Carlezon WA; Cohen BM; Béguin C (February 2008). "Standard protecting groups create potent and selective kappa opioids: salvinorin B alkoxymethyl ethers". Bioorganic & Medicinal Chemistry. 16 (3): 1279–86. doi:10.1016/j.bmc.2007.10.067. PMC 2568987Freely accessible. PMID 17981041. 
  7. ^ Baker LE; Panos JJ; Killinger BA; Peet MM; Bell LM; Haliw LA; Walker SL (April 2009). "Comparison of the discriminative stimulus effects of salvinorin A and its derivatives to U69,593 and U50,488 in rats". Psychopharmacology. 203 (2): 203–11. doi:10.1007/s00213-008-1458-3. PMID 19153716.