The present invention describes the preparation of maytansinol by methods that minimize processing steps, and reduce solvent volumes, making the process more efficient, and scaleable. This process comprises a step of converting bridged acetals of maytansinol to maytansinol. The simplified processing also aids in lowering the potential for human exposure to chemicals. Also provided is an isolated C3 to C9 bridged acetal of maytansinol.
本发明描述了通过最小化处理步骤和减少溶剂用量的方法来制备马坦西醇,使得该过程更加高效和可扩展。该过程包括将马坦西醇的桥接
缩醛转化为马坦西醇的步骤。简化的处理还有助于降低人类接触
化学物质的潜在风险。此外,还提供了一种马坦西醇的C3至C9桥接
缩醛的分离物。