Strictosidine

Strictosidine is a natural chemical compound and is classified as a glucoalkaloid and a vinca alkaloid. It is formed by the Pictet–Spengler condensation reaction of tryptamine with secologanin, catalyzed by the enzyme strictosidine synthase. Thousands of strictosidine derivatives are sometimes referred to by the broad phrase of monoterpene indole alkaloids.^[1][2] Strictosidine is an intermediate in the biosynthesis of numerous pharmaceutically valuable metabolites including quinine, camptothecin, ajmalicine, serpentine, vinblastine, vincristine and mitragynine.

Strictosidine

Names
IUPAC name Methyl (19S,20R)-19-(β-D-glucopyranosyloxy)-16,17,21,21a-tetradehydro-18-oxa-21a-homo-20,21-secoyohimban-16-carboxylate
Systematic IUPAC name Methyl (4S,5R,6S)-5-ethenyl-4-{[(1S)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indol-1-yl]methyl}-6-{[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-5,6-dihydro-4H-pyran-3-carboxylate
Other names Isovincoside
Identifiers
CAS Number	20824-29-7
3D model (JSmol)	Interactive image
ChemSpider	141721
PubChem CID	161336
CompTox Dashboard (EPA)	DTXSID40943068
InChI InChI=1S/C27H34N2O9/c1-3-13-16(10-19-21-15(8-9-28-19)14-6-4-5-7-18(14)29-21)17(25(34)35-2)12-36-26(13)38-27-24(33)23(32)22(31)20(11-30)37-27/h3-7,12-13,16,19-20,22-24,26-33H,1,8-11H2,2H3/t13-,16+,19+,20-,22-,23+,24-,26+,27+/m1/s1 Key: XBAMJZTXGWPTRM-NTXHKPOFSA-N
SMILES COC(=O)C1=CO[C@H]([C@@H]([C@@H]1C[C@H]2C3=C(CCN2)C4=CC=CC=C4N3)C=C)O[C@H]5[C@@H]([C@H]([C@@H]([C@H](O5)CO)O)O)O
Properties
Chemical formula	C27H34N2O9
Molar mass	530.574 g·mol−1
Melting point	193-197 °C
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Biosynthetic pathways help to define the subgroups of strictosidine derivatives.^[3][4]

Distribution

Strictosidine is found in the following plant families:

• Apocynaceae

Here especially in Rhazya stricta and Catharanthus roseus.

• Loganiaceae
• Rubiaceae
• Icacinaceae
• Nyssaceae
• Alangiaceae

Recent efforts in metabolic engineering have permitted the synthesis of strictosidine by yeast (Saccharomyces cerevisiae).^[5] This was accomplished by adding 21 genes and 3 gene deletions.

Research

The involvement of the glucoalkaloid strictosidine in the antimicrobial and antifeedant activity of Catharanthus roseus leaves was studied. Strictosidine and its deglucosylation product, specifically formed by the enzyme strictosidine glucosidase, were found to be active against several microorganisms.^[6]