Chaetoglobosin C

1. Core Information[1]
English Name: Chaetoglobosin C
Chinese Name (pinyin): Mao Qiu Jun Su C
CAS No.: 50645-76-6
Molecular Formula: C32H36N2O5
Molecular Weight: 528.6 g/mol
SMILES:CC1CC=CC2C3C(O3)(C(C4C2(C(=O)CCC(=O)C(=O)C(=C1)C)C(=O)NC4CC5=CNC6=CC=CC=C65)C)C
2. International Nomenclature & Identifiers
2.1 IUPAC Name
(7Z,9S,11E,13R,14S,16R,17S,18R,19S)-19-(1H-indol-3-ylmethyl)-7,9,16,17-tetramethyl-15-oxa-20-azatetracyclo[11.8.0.01,18.014,16]henicosa-7,11-diene-2,5,6,21-tetrone
2.2 InChI
InChI=1S/C32H36N2O5/c1-17-8-7-10-22-29-31(4,39-29)19(3)27-24(15-20-16-33-23-11-6-5-9-21(20)23)34-30(38)32(22,27)26(36)13-12-25(35)28(37)18(2)14-17/h5-7,9-11,14,16-17,19,22,24,27,29,33H,8,12-13,15H2,1-4H3,(H,34,38)/b10-7+,18-14-/t17-,19-,22-,24-,27-,29-,31+,32?/m0/s1
2.3 InChlKey
RIZAHVBYKWUPHQ-JZDGHNCDSA-N
2.4 Canonical SMILES
CC1CC=CC2C3C(O3)(C(C4C2(C(=O)CCC(=O)C(=O)C(=C1)C)C(=O)NC4CC5=CNC6=CC=CC=C65)C)C
2.5 Isomeric SMILES
C[C@H]/1C/C=C/[C@H]2[C@H]3[C@](O3)([C@H]([C@@H]4C2(C(=O)CCC(=O)C(=O)/C(=C1)/C)C(=O)N[C@H]4CC5=CNC6=CC=CC=C65)C)C
3. Spectroscopic Data
3.1 13C Nuclear Magnetic Resonance (13C NMR)
3.2 1H Nuclear Magnetic Resonance (1H NMR)
4. Biological Activities of Chaetoglobosin C
Chaetoglobosin C, a secondary metabolite from Chaetomium globosum, exhibits antifungal, anticancer, and phytotoxic properties.[2]
4.1 Antifungal Activity
It inhibits multiple fungi, including Rhizoctonia solani (MIC 11.79–23.66 μM) and Mucor miehei.[3]
4.2 Antitumor Activity
Chaetoglobosin C displays cytotoxicity against various cancer cell lines—IC50 6.27–20.0 μM for human breast cancer BC1 cells—and shows moderate potency against KB, K562, MCF7, and HepG2 cells.[4]

4.3 Phytotoxicity
At 50 ppm, chaetoglobosin C suppresses radish root growth by 26.4–67.5% and hypocotyl elongation by 33.3–71.6%; at 200 ppm inhibition reaches 60.7–71.2%, comparable to glyphosate.[4] It also impairs alfalfa seedling growth.[5]
4.4 Antitubercular Potential
Reports indicate activity against Mycobacterium tuberculosis, suggesting utility as an antitubercular lead.[6]

Chaetoglobosin C’s spectrum—from antifungal to cytotoxic and phytotoxic effects—underscores its potential in medicine and agriculture. Future work will further elucidate mechanisms and applications.
References
- [1] http://www.kehuaai.com/productInfo/174967
- [2] Chen J, Zhang W, Guo Q, et al. Bioactivities and future perspectives of chaetoglobosins[J]. Evidence‐Based Complementary and Alternative Medicine, 2020, 2020(1): 8574084.
- [3] Huang S, Chen H, Li W, Zhu X, Ding W, Li C. Bioactive Chaetoglobosins from the Mangrove Endophytic Fungus Penicillium chrysogenum. Mar Drugs. 2016 Sep 27;14(10):172.
- [4] Li H, Xiao J, Gao YQ, Tang JJ, Zhang AL, Gao JM. Chaetoglobosins from Chaetomium globosum, an endophytic fungus in Ginkgo biloba, and their phytotoxic and cytotoxic activities. J Agric Food Chem. 2014 Apr 30;62(17):3734-41.
- [5] Ichihara A, Katayama K, Teshima H, Oikawa H, Sakamura S. Chaetoglobosin O and Other Phytotoxic Metabolites from Cylindrocladium floridanum, a Causal Fungus of Alfalfa Black Rot Disease. Biosci Biotechnol Biochem. 1996 Jan;60(2):360-1.
- [6] Kanokmedhakul S, Kanokmedhakul K, Phonkerd N, Soytong K, Kongsaeree P, Suksamrarn A. Antimycobacterial anthraquinone-chromanone compound and diketopiperazine alkaloid from the fungus Chaetomium globosum KMITL-N0802. Planta Med. 2002 Sep;68(9):834-6.
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