الإتاحة: https://doi.org/10.1007/s13659-019-00226-zTest
الإتاحة: https://doi.org/10.1007/s13659-019-0200-7Test
الإتاحة: https://doi.org/10.1007/s13659-016-0090-xTest
الإتاحة: https://doi.org/10.1007/s13659-013-0062-3Test