Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
The anticancer activity of the roots of Ervatamia heyneana (Apocynaceae) was found to be due principally to the known alkaloid, camptothecin (1). The closely related, but less active, 9-methoxycamptothecin (2) was also obtained. This is the first reported isolation of these biogenetically