Difference between revisions of "Sarsasapogenin"
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Sarsasapogenin is unusual in that it has a ''cis''-linkage between rings A and B of the steroid nucleus, as opposed to the more usual ''trans''-linkage found in other saturated steroids. This 5β configuration is biologically significant, as a specific enzyme – [[sarsasapogenin 3β-glucosyltransferase]] – is found in several plants for the glycosylation of sarsasapogenin.<ref>{{citation | last1 = Paczkowski | first1 = C. | last2 = Wojciechowski | first2 = Z. A. | title = The occurrence of UDPG-dependent glucosyltransferase specific for sarsasapogenin in ''Asparagus officinalis'' | journal = Phytochemistry | volume = 27 | year = 1988 | pages = 2743–47}}.</ref> The (''S'')-configuration at C-25 is also in contrast to other spirostan sapogenins. | Sarsasapogenin is unusual in that it has a ''cis''-linkage between rings A and B of the steroid nucleus, as opposed to the more usual ''trans''-linkage found in other saturated steroids. This 5β configuration is biologically significant, as a specific enzyme – [[sarsasapogenin 3β-glucosyltransferase]] – is found in several plants for the glycosylation of sarsasapogenin.<ref>{{citation | last1 = Paczkowski | first1 = C. | last2 = Wojciechowski | first2 = Z. A. | title = The occurrence of UDPG-dependent glucosyltransferase specific for sarsasapogenin in ''Asparagus officinalis'' | journal = Phytochemistry | volume = 27 | year = 1988 | pages = 2743–47}}.</ref> The (''S'')-configuration at C-25 is also in contrast to other spirostan sapogenins. | ||
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| + | Sarsasapogenin has been used as a starting material for the synthesis of other steroids with a ''cis'' A–B linkage.<ref>{{citation | country-code = US | patent-number = 4057543}}.</ref><ref>{{citation | country-code = US | patent-number = 4680289}}.</ref> It has also attracted pharmaceutical interest in its own right, and is found in the rhizome of ''Anemarrhena asphodeloides'', used in Chinese tradition medicine (知母, ''zhī mǔ''), from which it is extracted commercially.<ref name="Wilshire">{{citation | url = http://www.wilshiretechnologies.com/steroidal_saponins_and_sapogenins_pdf/sarsasapogenin.pdf | title = Sarsasapogenin | publisher = Wilshire Technologies | accessdate = 2010-03-07}}.</ref> | ||
==References== | ==References== | ||
{{reflist}} | {{reflist}} | ||
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[[Category:Spirostan steroids]] | [[Category:Spirostan steroids]] | ||
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Revision as of 12:13, 7 March 2010
| Sarsasapogenin | |
|---|---|
| |
| IUPAC name | (3β,5β,25S)-spirostan-3-ol |
| Identifiers | |
| InChI | InChI=1/C27H44O3/c1-16-7-12-27 (29-15-16)17(2)24-23(30-27)14- 22-20-6-5-18-13-19(28)8-10-25( 18,3)21(20)9-11-26(22,24)4/h16 -24,28H,5-15H2,1-4H3/t16-,17-, 18+,19-,20+,21-,22-,23-,24-,25 -,26-,27+/m0/s1 |
| InChIKey | GMBQZIIUCVWOCD-WWASVFFGBR |
| Standard InChI | InChI=1S/C27H44O3/c1-16-7-12-2 7(29-15-16)17(2)24-23(30-27)14 -22-20-6-5-18-13-19(28)8-10-25 (18,3)21(20)9-11-26(22,24)4/h1 6-24,28H,5-15H2,1-4H3/t16-,17- ,18+,19-,20+,21-,22-,23-,24-,2 5-,26-,27+/m0/s1 |
| Standard InChIKey | GMBQZIIUCVWOCD-WWASVFFGSA-N |
| CAS number | [] |
| EC number | |
| ChemSpider | |
| Properties[1] | |
| Chemical formula | C27H44O3 |
| Molar mass | 416.64 g/mol |
| Melting point |
199–199.5 °C |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
Sarsasapogenin is a steroidal sapogenin, that is the aglycosidic portion of a plant saponin. It is named after sarsaparilla (Smilax sp.), a family of climbing plants found in subtropical regions. It was one of the first sapogenins to be identified,[2] and the first spirostan steroid to be identified as such.[3] The identification of the spirostan structure, with its ketone spiro acetal functionality, was fundamental in the development of the Marker degradation, which allowed the industrial production of progesterone and other sex hormones from plant steroids.
Sarsasapogenin is unusual in that it has a cis-linkage between rings A and B of the steroid nucleus, as opposed to the more usual trans-linkage found in other saturated steroids. This 5β configuration is biologically significant, as a specific enzyme – sarsasapogenin 3β-glucosyltransferase – is found in several plants for the glycosylation of sarsasapogenin.[4] The (S)-configuration at C-25 is also in contrast to other spirostan sapogenins.
Sarsasapogenin has been used as a starting material for the synthesis of other steroids with a cis A–B linkage.[5][6] It has also attracted pharmaceutical interest in its own right, and is found in the rhizome of Anemarrhena asphodeloides, used in Chinese tradition medicine (知母, zhī mǔ), from which it is extracted commercially.[7]
References
- ↑ Jacobs, Walter A.; Simpson, James C. E. On Sarsasapogenin and Gitogenin. J. Biol. Chem. 1934, 105 (3), 501–10, <http://www.jbc.org/content/105/3/501.full.pdf>.
- ↑ Power, F. B.; Salway, A. H. J. Chem. Soc. 1914, 201.
- ↑ Marker, Russell E.; Rohrmann, Ewald Sterols. LIII. The Structure of the Side Chain of Sarsasapogenin. J. Am. Chem. Soc. 1939, 61 (4), 846–51. DOI: 10.1021/ja01873a020.
- ↑ Paczkowski, C.; Wojciechowski, Z. A. The occurrence of UDPG-dependent glucosyltransferase specific for sarsasapogenin in Asparagus officinalis. Phytochemistry 1988, 27, 2743–47.
- ↑ .
- ↑ .
- ↑ Sarsasapogenin; Wilshire Technologies, <http://www.wilshiretechnologies.com/steroidal_saponins_and_sapogenins_pdf/sarsasapogenin.pdf>. (accessed 7 March 2010).
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