Ent-kaurenoic acid glycoside precursor compositions and synthesis methods are provided. The KA-19-monoside, KA-19-bioside and KA-19-trioside precursors can be used as starting materials for a variety of kaurenoic acid based reactions. The precursors provide alternative synthesis pathways for steviol glycosides to the natural pathway based on Steviol biosynthesis. The alternative synthesis pathways using the precursors also circumvent the rate limiting step of the natural Steviol biosynthesis pathway. The precursors can be used individually or in combination to produce a mixture or individual steviol glycosides such as Rebaudioside A, Rebaudioside D or Rebaudioside M. Control over the precursor quantities and composition allows control over the composition of the resulting steviol glycosides that are finally produced.
提供了Ent-kaurenoic acid glycoside precursor compositions and synthesis methods。KA-19-monoside、KA-19-bioside和KA-19-trioside前体可以作为各种基于kaurenoic acid的反应的起始物质。这些前体为steviol glycosides提供了替代的合成途径,与基于Steviol
生物合成的自然途径相比。使用这些前体的替代合成途径也绕过了自然Steviol
生物合成途径的速率限制步骤。这些前体可以单独使用或组合使用,以产生混合物或单独的steviol glycosides,如Rebaudioside A、Rebaudioside D或Rebaudioside M。对前体数量和组成的控制允许控制最终产生的steviol glycosides的组成。