The known antibiotic and cytotoxic compounds griseorhodin A (1) and griseorhodin C (2) were produced in solid culture by Streptomyces puniceus AB10, which was isolated from the leaf-cutter ant Acromyrmex rugosus rugosus. Their absolute configurations were unambiguously established as 6S,6aR,7S,8S and 6R,6aR,7S,8R, respectively, using vibrational circular dichroism (VCD) and density functional theory (DFT) calculations.

中文翻译：

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灰黄霉素A和C的绝对构型

已知的抗生素和细胞毒性化合物灰藻糖蛋白A（1）和灰藻糖蛋白C（2）是由刺槐链霉菌AB10固态培养产生的，该菌是从切叶蚁Acromyrmex rugosus rugosus中分离得到的。利用振动圆二色性（VCD）和密度泛函理论（DFT）计算，将它们的绝对构型明确确定为6 S，6a R，7 S，8 S和6 R，6a R，7 S，8 R。