Journal of Structural Chemistry ( IF 1.2 ) Pub Date : 2022-02-28 , DOI: 10.1134/s0022476622010061 Y. -N. Zhang 1 , Y. Duan 1 , L. -X. Liu 1 , L. Chang 1 , Y. -R. Feng 1 , L. -L. Wu 1 , L. Zhang 1 , Y. -J. Zhang 1 , D. -Y. Zou 1 , Y. -L. Liu 1 , X. Su 1
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Abstract
With the aim to improve the hygroscopic stability of palmatine chloride (PMTCl), an unreported single crystal of PMT–SSA (C21H20NO4·C7H5O6S·H2O) is prepared by the solvent evaporation method and characterized. A comprehensive analysis of the structure and Hirshfeld surface reveals that π–π stacking plays a crucial role in accumulating PMT–SSA. As expected, the hygroscopic stability of PMT–SSA is significantly improved compared with that of PMTCl. This may be due to the presence of π–π stacking in the structure of PMT–SSA which improves the hygroscopic stability. The present work inaugurates an avenue for improving the hygroscopic stability of active pharmaceutical ingredients and provides a novel crystalline product with a bright commercial prospect. Unfortunately, the maximum solubility of PMT–SSA is lower than that of PMTCl. How to improve its solubility will be explored in subsequent studies. However, it is surprising that PMT–SSA shows advantages with regard to antibacterial properties in comparison to PMTCl.
中文翻译：
关于用结晶棕榈碱磺酸盐药用盐提高氯化棕榈碱吸湿稳定性的研究
摘要
为了提高氯化巴马汀 (PMTCl) 的吸湿稳定性，一种未报道的 PMT-SSA 单晶 (C 21 H 20 NO 4 ·C 7 H 5 O 6 S·H 2O)通过溶剂蒸发法制备并表征。对结构和 Hirshfeld 表面的综合分析表明，π-π 堆积在 PMT-SSA 的积累中起着至关重要的作用。正如预期的那样，与 PMTCl 相比，PMT-SSA 的吸湿稳定性显着提高。这可能是由于 PMT-SSA 结构中存在 π-π 堆积，从而提高了吸湿稳定性。本工作为提高活性药物成分的吸湿稳定性开辟了一条途径，并提供了一种具有广阔商业前景的新型结晶产品。不幸的是，PMT-SSA 的最大溶解度低于 PMTCl。如何提高其溶解度将在后续研究中进行探索。然而，
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