Figure 1.

Figure 2.

Figure 3.

Figure 4.
![[A] HPLC chromatogram and [B] amount of compound 1 of total extract and different fractions of M. fluvialis.](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/6471d13c215d2f6c89db1c80/j_fhort-2023-0026_fig_004.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=ASIA6AP2G7AKEYCNBLTZ%2F20260220%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20260220T234715Z&X-Amz-Expires=3600&X-Amz-Security-Token=IQoJb3JpZ2luX2VjENf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaDGV1LWNlbnRyYWwtMSJIMEYCIQD5oelpncFQLx6jhAXk6pHOcRxjkVmf%2BDd5ZtFGVizhywIhAJ9iP0LrV0L%2BC%2FXQ0s%2Ffy3vZ5tuh4eBSSQ37FOT%2BTe16KsYFCKD%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQAhoMOTYzMTM0Mjg5OTQwIgwAo%2B8PJUdgQmL8o8sqmgU2mxNpntnVUAQAo8F%2BQzx23G2eTUgsOcxQn8faTMwpSTAG4%2FUaEz2YUpoSsqw4WL4dP%2FMozpbYRZWp55hzvkdmHJsfKjr9cS36iM3EDpsX3KbXM22Fu%2BGrxxCtOSiuQdD6wd5j68hg1ICSQEjIggSDJJDI0zQRdBasWTID3OU9qPAZai4F0gkORBkJz7r6%2FN0w%2FoweTgPegmMMy%2Fzb6fbrTncIY8V4tYMm5EtaBT6z3v5PnOSFsWiZZWPmtP0mY05FBuoBwhxE9YSaPHxeU%2B%2FKPxdUhUWUvJ20obzTGwXYIRHXnWdK%2FVfLDPHHTr10OHXlsoTmS9RH5HelC5oXLkVyNmG%2FDkNrWOmQsw%2BjFF1PihdZ2f3thDdvmjIDCtkUwRIKI5m2eCW37pOVTgvJRhCq%2BD35Ovs3PbqG%2BJqlCxvRSW00fGgc2VlHEn1IGaC1nFGWOQOg%2BmJ%2BkwH6UFnOxq%2BSq3%2FHTrHjDvXzGJEBpq02WrhYmUYCT7JIuUkXAO5%2BaMN2n2zt4GrhY3ex0Su0b5NDBgdq4DBVdT5iMNw8Wh%2F9mt6WjdCUcbE3jjN6aRQfKHxpJLmHNYiErUxGnViE0kw5UwuoOHBal3yi9iNygV7rFYbN6526tbX6D3sGDOkdkuUtI%2B%2Fqkewuzzl4nX5zbJEkXY%2ByG0jPcJ0tL%2BbTJtJzlCsl67cEtmiQsRuy4rGS1MZ7Xm4yHJnMkAUXwxgw4Wq1gFBEZwwHAUqdWhVP1jUUhScWUl8QsJLpCVA%2Fb6mXvqKfwvCYzaBbVA6bjBibznkXyMoCoM5XveLHD5ASJhkZKW9oVsbNS6ZPELXKU7WWPNtoOSfJK32qFGgv5jnwka35DAa0CCernhwIZ6OWWw28bdzF9emO0rmRfvowrcXjzAY6sAHrXJsjv5s%2BPQrv9KjmseJtiybdpqcoxNVUI040XLJaRpxiz2DqgcBFhaPalngIpYdlK11P6B3UMQdqttvxyHEGYGRNWgCiEGzUo55sOm3CR9lC%2F0ELNQavM8s6ufHlQGUkltKrVBqEH8UgS%2FZ7hP9bVPhFwAkkGTDm5kH0PlzGG6cAaehNaJGnPnYrVYOduohAlzusBFbkchQHlP8ACoV%2BJjJj0dsJv64FThHXVsnLjg%3D%3D&X-Amz-Signature=aba76d25174a4615428a2759fd83e30b106bc5dca85b874f7bda4aadec2b8b84&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Supplementary Scheme S1.

Supplementary Figure S1.

Supplementary Figure S2.

Supplementary Figure S3.

Supplementary Figure S4.

Supplementary Figure S5.

Supplementary Figure S6.

α-Glucosidase inhibitory activity of compounds 1–6 from M_ fluvialis_
| Compound | α-Glucosidase inhibitory activity (100 μM) | IC50 (μM) |
|---|---|---|
| 1 | 89.2 ± 3.4 | 14.8 |
| 2 | 53.1 ± 6.3 | 95.2 |
| 3 | 32.8 ± 6.6 | >100 |
| 4 | 24.8 ± 6.5 | >100 |
| 5 | 21.9 ± 0.3 | >100 |
| 6 | 17.0 ± 0.3 | >100 |
| Acarbose* | 76.4 ± 3.4 | 72.5 |