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The fluxional nature or so-called pseudorotation of cyclopentane has well been documented. Conformational dynamics in this molecule is so fast, that's even hard to populate one conformational form, in temperatures as low as -100oC or 263 K. cis-Octahydropentalene contains two such fluxional molecule fused together. The molecule is not as rigid as its trans isomer, rather it's mobile and fluxional at both ends and rigid at the fused carbons. While rigid trans-decalin is known to occur in lipid bilayer to exert rigidity where its desired, cis-Octahydropentalene occurs in some natural products. Partial mobility of cis-Octahydropentalene can have profound effect on the function and biomedical properties of these natural products.

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Myocardial infarction (MI) in pregnancy is a rare and critical topic. In time diagnosis and management is mandatory for preventing both mother and fetus from possible mortality and morbidities. Both traditional cardiovascular risk factor and some factors which are present during pregnancy are related to MI during pregnancy. Management of ST-segment elevation MI during pregnancy is almost the same as other women. In the present report, we have discussed a case of anterior ST-segment elevation MI during the late third trimester of pregnancy, which ended up in a successful vaginal delivery. However, in the post-partum period, the patient developed severe bleeding and uterine atony, which was managed medically and with the massage.