Abstract
Objective: In the present research article, we synthesized novel pregnane derivatives from 16- dehydropregnenolone acetate (1) obtained by the degradation of naturally occurring plant productdiosgenin. The oxime esters, 3β-acetoxy-pregn-5,16-diene, 20-one O-(2-(6-methoxynaphthalene-2yl) propionyl) oxime (5) and 3β-hydroxy-pregn-5, 16-diene, 20-one O-(2-(4-isobutyl phenyl) propionyl) oxime (6) have been synthesized by reaction of 3β-acetoxy-5,16-pregnadien-20-oxime (3) with NSAIDs Ibuprofen and naproxen, respectively.
Methods: The epoxide derivative 3β-hydroxy-16α, 17α-epoxypregn-5-ene-20-one (4) was opened by BF3.Et2O and yielding product 3,16-di-hydroxy pregn-5-ene-20-one (7) and 3,16,17-tri-hydroxy pregn-5- ene-20-one (8), both the synthesized compounds underwent esterification with Ibuprofen affording 3,16- di-(2-(4-isobutyl phenyl) propionoxy) pregn-5-ene-20-one (9) and 3,16-di-(2-(4-isobutyl phenyl) propionoxy) 17-hydroxy pregn-5-ene-20-one (10), respectively.
Results: A one novel pregnane glycoside 3β-[2′,3′,4′,6′-tetra-O-acetyl-β-D-glucopy-ranosyl]-Oxy-20β- hydroxy-16α-methoxy-pregn-5-ene (15) has also been synthesized from 3β, 20β-dihydroxy-16α-methoxypregn- 5-ene (12).
Conclusion: After the synthesis, all the compounds have been characterized by modern spectroscopic techniques.
Keywords: Pregnane, NSAIDs, oxime, steglich esterification, glycoside, spectroscopic characterization, steroids.
Graphical Abstract
[http://dx.doi.org/10.1016/j.bbamcr.2016.06.004] [PMID: 27288742]
[http://dx.doi.org/10.1021/ja01620a079]
[http://dx.doi.org/10.1021/jo0108717] [PMID: 12027712]
[http://dx.doi.org/10.1016/j.jsbmb.2017.02.013] [PMID: 28232149]
[http://dx.doi.org/10.1016/j.steroids.2011.09.006] [PMID: 21964577]
[http://dx.doi.org/10.1002/ardp.201500220]
[http://dx.doi.org/10.1016/j.steroids.2012.10.009] [PMID: 23127813]
[http://dx.doi.org/10.1021/jm900712n] [PMID: 19791804]
[http://dx.doi.org/10.1021/jm00379a012] [PMID: 3965714]
[http://dx.doi.org/10.1016/j.indcrop.2019.02.009]
[http://dx.doi.org/10.1016/j.bioorg.2016.05.008] [PMID: 27299811]
[http://dx.doi.org/10.1007/s00044-009-9280-y]
[http://dx.doi.org/10.1016/j.steroids.2010.11.004] [PMID: 21110993]
[http://dx.doi.org/10.1016/j.steroids.2011.07.010] [PMID: 21820457]
[http://dx.doi.org/10.1021/np0203382] [PMID: 12608845]
[http://dx.doi.org/10.1021/ja01145a067]
[http://dx.doi.org/10.1021/ja01606a043]
[http://dx.doi.org/10.1016/S0008-6215(00)83314-5]