20311-51-7Relevant articles and documents
spiral steroid alkali alkane xylosides alkloids method for the synthesis of (by machine translation)
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Paragraph 0120; 0128; 0129, (2017/04/11)
The invention discloses a convergent spiral steroid alkali alkane xylosides alkaloid chemical synthesis method, the method comprises the following steps: (a) the 3?Hydroxy acyl silicon-based or for the protection of sapogenin spiral steroid (II) into the corresponding 16?Acetoxy?22?Carbonyl?26?(III) hydroxyl gallbladder gonanes; (b) 3?Hydroxy silicon-based or acyl group protection for 16?Acetoxy?22?Carbonyl?26?Preparation of sulfonic acid ester gallbladder gonanes (IV); (c) 3?Hydroxy silicon-based or acyl group protection for 16?Acetoxy?22?Carbonyl?26?Preparation of azide interior gonanes (V); (d) (VI) spiral steroid alkali alkane sapogenin the preparation; (e) acyl protecting spiral steroid alkali alkane xylosides alkloids preparation (VII); (f) spiral steroid alkali alkane xylosides alkloids (I) of the preparation. The preparation method of this invention simple process, high yield, has strong utility value. (by machine translation)
An alternative total synthesis of solamargine
Wei, Guo Hua,Wei, Dong Bin,Du, Yu Guo
, p. 1247 - 1251 (2012/11/06)
Solamargine, (25R)-3β-{O-α-L-rhamnopyranosyl-(1→2)-[O- α-L-rhamnopyranosyl-(1→4)]-β-D-glucopyranosyloxy} -22α-Nspirosol-5-ene, isolated from the berries of solanum aculeastrum, has been synthesized in 26.8% overall yield. First glycosylation before N-cyclization significantly facilitated synthesis of the desired molecule. We anticipate that this work will provide a new approach to access solamargine and its diversified analogues. Science China Press and Springer-Verlag Berlin Heidelberg 2012.
Total synthesis of solamargine
Wei, Guohua,Wang, Jing,Du, Yuguo
scheme or table, p. 2930 - 2933 (2011/06/26)
Solamargine, (25R)-3β-{O-α-l-rhamnopyranosyl-(1→2)-[O- α-l-rhamnopyranosyl-(1→4)]-β-d-glucopyranosyloxy} -22α-N-spirosol-5-ene, has been synthesized in 13 steps in a 10.5% overall yield starting from the naturally abundant diosgenin. Condensation of a partially protected glucopyranosyl donor with an oxaza-spiro moiety, which was formed in one-pot azido reduction, significantly improved the synthesis of desired molecule. The target compound exhibited good cytotoxic activities against tumor cells HeLa, A549, MCF-7, K562, HCT116, U87, and HepG2 with IC 50 ranging from 2.1 to 8.0 μM.